[stable20] Stop transfer of ownership between same users

[backportbot-nextcloud]

backport of #23300

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 34033: failure

mariadb10.4-php7.3

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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\CacheTest::testSimple
Failed asserting that 0 matches expected 66.

/drone/src/tests/lib/Files/Cache/CacheTest.php:70

mysql8.0-php7.2

• cancelled - typically means that the tests took longer than the drone CI allows them to run

acceptance-header

• tests/acceptance/features/header.feature:33

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  Scenario: users from other groups are not seen in the contacts menu when autocompletion is restricted within the same group # /drone/src/tests/acceptance/features/header.feature:33
    Given I am logged in as the admin                                                                                         # LoginPageContext::iAmLoggedInAsTheAdmin()
    And I visit the settings page                                                                                             # SettingsMenuContext::iVisitTheSettingsPage()
    And I open the "Sharing" section of the "Administration" group                                                            # AppNavigationContext::iOpenTheSectionOf()
    And I enable restricting username autocompletion to groups                                                                # SettingsContext::iEnableRestrictingUsernameAutocompletionToGroups()
    And I see that username autocompletion is restricted to groups                                                            # SettingsContext::iSeeThatUsernameAutocompletionIsRestrictedToGroups()
    When I open the Contacts menu                                                                                             # ContactsMenuContext::iOpenTheContactsMenu()
    Then I see that the Contacts menu is shown                                                                                # ContactsMenuContext::iSeeThatTheContactsMenuIsShown()
    And I see that the contact "user0" in the Contacts menu is not shown                                                      # ContactsMenuContext::iSeeThatTheContactInTheContactsMenuIsNotShown()
      Failed asserting that true is false.
    And I see that the contact "admin" in the Contacts menu is not shown                                                      # ContactsMenuContext::iSeeThatTheContactInTheContactsMenuIsNotShown()