[stable18] Allow to disable share emails

[backportbot-nextcloud]

backport of #22300

[MorrisJobke]

Looks good 👍

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 32018: 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) OCA\Files_Sharing\Tests\SharedMountTest::testPermissionMovedGroupShare with data set #201 ('folder', 25, 11)
Failed asserting that false is true.

/drone/src/apps/files_sharing/tests/SharedMountTest.php:361

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) OCA\Files\Tests\Service\TagServiceTest::testUpdateFileTags
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
+    0 => 3185
 )

/drone/src/apps/files/tests/Service/TagServiceTest.php:142

acceptance-app-files

• tests/acceptance/features/app-files.feature:108

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  Scenario: show shares                                               # /drone/src/tests/acceptance/features/app-files.feature:108
    Given I am logged in                                              # LoginPageContext::iAmLoggedIn()
    And I share the link for "welcome.txt"                            # FilesAppSharingContext::iShareTheLinkFor()
    When I open the "Shares" section                                  # AppNavigationContext::iOpenTheSection()
    Then I see that the current section is "Shares"                   # AppNavigationContext::iSeeThatTheCurrentSectionIs()
    Then I see that the file list contains a file named "welcome.txt" # FileListContext::iSeeThatTheFileListContainsAFileNamed()
      Row for file welcome.txt in file list could not be found after 100 seconds (NoSuchElementException)