[stable19] Flow: do not hide "matches" and "does not match" checkers

[backportbot-nextcloud]

⚠️ This backport had conflicts and is incomplete ⚠️

backport of #22533

[nickvergessen]

/compile amend /

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 33293: failure

mariadb10.1-php7.2

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There were 2 warnings:
1) Test\Files\ViewTest::testRenameFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static
2) Test\Files\ViewTest::testCopyFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static
--
There was 1 failure:
1) OCA\Files_Trashbin\Tests\StorageTest::testSingleStorageDeleteFileFail
Failed asserting that false is true.
/drone/src/apps/files_trashbin/tests/StorageTest.php:499

mysql8.0-php7.2

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There were 2 warnings:
1) Test\Files\ViewTest::testRenameFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static
2) Test\Files\ViewTest::testCopyFailDeleteTargetKeepSource
Trying to configure method "writeStream" which cannot be configured because it does not exist, has not been specified, is final, or is static
--
There was 1 failure:
1) Test\Files\Cache\QuerySearchHelperTest::testComparison with data set #8 (OC\Files\Search\SearchBinaryOperator Object (...), array(0))
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
Array (
- 0 => 0
+ 0 => '443'
)
/drone/src/tests/lib/Files/Cache/QuerySearchHelperTest.php:212