Read options.fetch_body and options.fetch_flags from the config

[csemazharul]

Fixes #620.

src/config/imap.php documents both options:

'fetch_body'  => true,
'fetch_flags' => true,

but Query::__construct() never reads them. It picks up options.sequence, options.fetch, options.fetch_order, date_format and options.soft_fail, while $fetch_body and $fetch_flags stay at their hardcoded true:

protected bool $fetch_body = true;
protected bool $fetch_flags = true;

So setting either in the ClientManager config has no effect, and the only way to turn one off is to chain setFetchBody(false) / setFetchFlags(false) on every query.

Change

Two lines in the constructor, next to the options it already reads. true stays the default, so behaviour is unchanged for anyone who has not set them.

$this->fetch_body = $config->get('options.fetch_body', true);
$this->fetch_flags = $config->get('options.fetch_flags', true);

Test

tests/issues/Issue620Test.php covers both directions — config values honoured, and the defaults still true. It fails on master and passes with the change.

tests/issues before: Tests: 24, Assertions: 58, Errors: 1, Failures: 6
tests/issues after: Tests: 24, Assertions: 59, Errors: 1, Failures: 5

The remaining error and five failures are pre-existing on master and unrelated (Issue355, 379, 383, 410, 420, 511). The root-level unit tests pass in both cases. Note the full suite stops early on a live-mailbox test when LIVE_MAILBOX is unset, so I ran the directories separately.