chore: sync tauri-runtime-cef from upstream feat/cef

[github-actions]

Automated sync from tauri-apps/tauri feat/cef branch.

If this PR has merge conflicts, the upstream changed runtime.rs or webview.rs in a way that requires manual porting of the overlay modules. Fix conflicts and merge.

Before merging, read the divergence report below. Re-applying fork patches by hand is how upstream fixes get dropped silently — the report is the only place they surface, because the copy overwrites the evidence.

CEF version: check the cef pin in Cargo.toml, bump Sable's src-tauri/Cargo.toml to match.

Note: if syncing from amr/cef-gtk4, the Cargo.toml will reference gtk4 and winit-gtk4, the fork's overlay config may need updating to handle the gtk4 crate name and the winit git dep.

---

Divergence report

Fork-only files (10)

Not in upstream, so they survive the copy and never show in this PR's diff.

• examples/stream_probe.rs
• examples/sw_probe.rs
• src/compat.rs
• src/config.rs
• src/platform/macos/appkit_state.rs
• src/policy.rs
• src/streaming.rs
• src/wayland/mod.rs
• src/wayland/webview.rs
• src/wayland/window.rs

Upstream items not present in the fork (108)

Each is either a deliberate fork removal or an upstream fix a previous sync dropped. Deliberate removals in this repo always carry a comment explaining why — an entry you cannot find a rationale for is a regression.

File	Kind	Item
src/cef_impl/client/life_span.rs	fn	do_close
src/cef_impl/client/life_span.rs	fn	on_before_popup_aborted
src/cef_impl/client/life_span.rs	fn	popup_source_observation_is_available_without_dispatch_and_redacted_from_debug
src/cef_impl/client/life_span.rs	mod	tests
src/cef_impl/client/life_span.rs	type	PopupClientFactory
src/cef_impl/client/load.rs	fn	on_load_error
src/cef_impl/client/load.rs	fn	on_loading_state_change
src/cef_impl/client/mod.rs	fn	frame_handler
src/cef_impl/client/mod.rs	mod	frame
src/cef_impl/client/permission.rs	const	ALLOY_MEDIA_PERMISSIONS
src/cef_impl/client/permission.rs	const	AUDIO_CAPTURE
src/cef_impl/client/permission.rs	const	PERMISSION_CONTENT_SETTINGS
src/cef_impl/client/permission.rs	const	VIDEO_CAPTURE
src/cef_impl/client/permission.rs	fn	allow_content_settings
src/cef_impl/client/permission.rs	fn	alloy_style_host
src/cef_impl/request_handler.rs	fn	keep_encoding_declaration_first
src/cef_impl/request_handler.rs	fn	preserves_every_cef_termination_reason
src/cef_impl/request_handler.rs	fn	termination_reason
src/cef_impl/request_handler.rs	mod	termination_tests
src/external_message_pump/linux.rs	fn	deadline
src/external_message_pump/mod.rs	fn	next_deadline
src/lib.rs	mod	devtools
src/lib.rs	mod	dialog
src/lib.rs	mod	frame
src/lib.rs	mod	frame_navigation
src/lib.rs	mod	macros
src/lib.rs	mod	popup
src/lib.rs	mod	tauri_ext
src/platform/linux/utils.rs	const	CURRENT_TIME
src/platform/linux/utils.rs	const	NET_ACTIVE_WINDOW_SOURCE_PAGER
src/platform/linux/utils.rs	fn	activate_window
src/platform/linux/webview.rs	fn	native_parent_matches
src/platform/linux/webview.rs	fn	native_visible
src/platform/linux/window.rs	fn	raise_native
src/platform/macos/application.rs	fn	activate_application
src/platform/macos/utils.rs	fn	associated_object
src/platform/macos/utils.rs	fn	set_associated_object
src/platform/macos/webview.rs	fn	destroy_host_window
src/platform/macos/webview.rs	fn	native_parent_matches
src/platform/macos/webview.rs	fn	native_visible
src/platform/macos/webview.rs	fn	try_nsview
src/platform/macos/window.rs	fn	handle_window_notification
src/platform/macos/window.rs	fn	new
src/platform/macos/window.rs	fn	observe_traffic_light_resets
src/platform/macos/window.rs	fn	reapply_traffic_light_position
src/platform/macos/window.rs	fn	reapply_traffic_light_position_after_appearance_change
src/platform/macos/window.rs	fn	reapply_traffic_light_position_deferred
src/platform/macos/window.rs	fn	set_traffic_light_observer
src/platform/macos/window.rs	fn	traffic_light_observer
src/platform/macos/window.rs	fn	traffic_light_observer_key
src/platform/macos/window.rs	static	TRAFFIC_LIGHT_OBSERVER_KEY
src/platform/macos/window.rs	struct	TrafficLightObserver
src/platform/macos/window.rs	struct	TrafficLightObserverIvars
src/platform/windows/webview.rs	const	PIN_Z_ORDER_SUBCLASS_ID
src/platform/windows/webview.rs	const	Z_ORDER_PINNED
src/platform/windows/webview.rs	const	Z_ORDER_UNPINNED
src/platform/windows/webview.rs	fn	destroy_host_window
src/platform/windows/webview.rs	fn	native_parent_matches
src/platform/windows/webview.rs	fn	native_visible
src/platform/windows/webview.rs	fn	pin_z_order_subclass_proc
src/platform/windows/webview.rs	fn	raise_to_top
src/platform/windows/webview.rs	fn	set_z_order_pinned
src/runtime.rs	enum	DesktopDeepLinks
src/runtime.rs	fn	apply_config
src/runtime.rs	fn	cef_api_version
src/runtime.rs	fn	command_line_arg
src/runtime.rs	fn	command_line_args
src/runtime.rs	fn	custom_scheme_url
src/runtime.rs	fn	deep_link_schemes
src/runtime.rs	fn	from
src/runtime.rs	fn	navigate_first_webview
src/runtime.rs	fn	root_cache_path
src/runtime.rs	fn	source_url
src/runtime.rs	fn	webview_version
src/runtime.rs	fn	with_settings
src/runtime.rs	struct	Cef
src/runtime.rs	struct	NewWindowOpener
src/runtime.rs	type	RuntimeInitAttrs
src/runtime.rs	type	RuntimeWebviewAttributes
src/runtime.rs	type	SettingsCallback
src/runtime.rs	type	Webview
src/runtime.rs	type	WindowOpener
src/webview.rs	enum	RuntimeStyle
src/webview.rs	fn	fmt
src/webview.rs	fn	for_document
src/webview.rs	fn	frame_navigation_state
src/webview.rs	fn	opener
src/webview.rs	fn	popups
src/webview.rs	fn	runs_in_frame
src/webview.rs	fn	set_opener
src/webview.rs	fn	snapshot
src/webview.rs	fn	url_getter_does_not_hold_the_window_lock_while_waiting_for_ui
src/webview.rs	mod	getter_tests
src/webview.rs	struct	CefWebviewAttributes
src/webview.rs	struct	Dispatcher
src/webview.rs	struct	WebviewSnapshot
src/window.rs	const	PENDING_ACTIVATION_TIMEOUT
src/window.rs	fn	activate
src/window.rs	fn	apply_pending_activations
src/window.rs	fn	eq
src/window.rs	fn	fmt
src/window.rs	fn	max_size_constraint
src/window.rs	fn	min_size_constraint
src/window.rs	fn	new
src/window.rs	fn	references_preserve_one_window_and_reject_replacements
src/window.rs	mod	native_window_identity_tests
src/window.rs	struct	NativeWindowToken
src/window_builder.rs	fn	no_redirection_bitmap