Invitation mail: Change subject if event got updated

[onny]

• Resolves: #36553

Summary

Trying to implement the attendee invitation mail that the subject of the mail changes if an event is updated.

TODO

• Add tests?

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[tcitworld]

Looks good, thanks for the PR!

There's one failed test:

There was 1 failure:

1) OCA\DAV\Tests\unit\CalDAV\Schedule\IMipPluginTest::testParsingSingle
Expectation failed for method name is "addSubjectAndHeading" when invoked 1 time(s)
Parameter 4 for invocation OCA\DAV\CalDAV\Schedule\IMipService::addSubjectAndHeading(Mock_IEMailTemplate_2ba40391 Object (...), 'request', 'Mr. Wizard', 'Fellowship meeting without (!) Boromir', true): void does not match expected value.
Failed asserting that true matches expected false.

/drone/src/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php:247
/drone/src/apps/dav/tests/unit/CalDAV/Schedule/IMipPluginTest.php:231

Do you mind signing-off your commits?
https://github.com/nextcloud/server/pull/36661/checks?check_run_id=11254338082
https://github.com/nextcloud/server/blob/master/.github/CONTRIBUTING.md#sign-your-work

[miaulalala]

You can run a single test locally by running:

NOCOVERAGE=1 ./autotest.sh sqlite path-to-your-file

in your root directory

[miaulalala]

Drone tests fail with: "Waiting for Selenium". Can you rebase @onny ?

[miaulalala]

LGTM

[ChristophWurst]

Unsure if this should go into 26 or 27. It feels more like a feature/enhancement than a fix so I tend to say let's wait for the 26 branch-off.

[welcome]

Thanks for your first pull request and welcome to the community! Feel free to keep them coming! If you are looking for issues to tackle then have a look at this selection: https://github.com/nextcloud/server/issues?q=is%3Aopen+is%3Aissue+label%3A%22good+first+issue%22