[stable18] Enable theming background transparency

[skjnldsv]

backport of #23680

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 34591: failure

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• I'm a little sad 🤖 and was not able to find the logs for this failed job - please improve me at https://github.com/MorrisJobke/drone-logs to provide this to you

samba

Show full log

There was 1 failure:

1) OCA\Files_External\Tests\Storage\SmbTest::testNotifyGetChanges
Actual changes are:
Array
(
    [0] => OC\Files\Notify\Change Object
        (
            [type:OC\Files\Notify\Change:private] => 1
            [path:OC\Files\Notify\Change:private] => newfile.txt
        )

    [1] => OC\Files\Notify\RenameChange Object
        (
            [targetPath:OC\Files\Notify\RenameChange:private] => renamed.txt
            [type:OC\Files\Notify\Change:private] => 4
            [path:OC\Files\Notify\Change:private] => newfile.txt
        )

    [2] => OC\Files\Notify\Change Object
        (
            [type:OC\Files\Notify\Change:private] => 2
            [path:OC\Files\Notify\Change:private] => renamed.txt
        )

)

Failed asserting that an array contains OC\Files\Notify\RenameChange Object &00000000667b95f3000000005da1770f (
    'targetPath' => 'renamed.txt'
    'type' => 4
    'path' => 'newfile.txt'
).

/drone/src/apps/files_external/tests/Storage/SmbTest.php:125

[rullzer]

🐘