fix(caldav): Cast calendar objects id to int when building index

[ChristophWurst]

Summary

Fixes

TypeError: Return value of OCA\DAV\BackgroundJob\BuildReminderIndexBackgroundJob::buildIndex() must be of the type int, string returned in /var/www/html/nextcloud/apps/dav/lib/BackgroundJob/BuildReminderIndexBackgroundJob.php:123
Stack trace:
#0 /var/www/html/nextcloud/apps/dav/lib/BackgroundJob/BuildReminderIndexBackgroundJob.php(80): OCA\DAV\BackgroundJob\BuildReminderIndexBackgroundJob->buildIndex()
#1 /var/www/html/nextcloud/lib/public/BackgroundJob/Job.php(78): OCA\DAV\BackgroundJob\BuildReminderIndexBackgroundJob->run()
#2 /var/www/html/nextcloud/lib/public/BackgroundJob/QueuedJob.php(58): OCP\BackgroundJob\Job->start()
#3 /var/www/html/nextcloud/lib/public/BackgroundJob/QueuedJob.php(48): OCP\BackgroundJob\QueuedJob->start()
#4 /var/www/html/nextcloud/cron.php(152): OCP\BackgroundJob\QueuedJob->execute()
#5 {main}

My guess is that the database driver sometimes returns an int, other times it gives a string (sqlite?).

TODO

• Do

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)

[ChristophWurst]

/backport to stable27

[ChristophWurst]

/backport to stable26

[ChristophWurst]

/backport to stable25

[backportbot-nextcloud]

The backport to stable27 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable27
git pull origin/stable27

# Create the new backport branch
git checkout -b fix/foo-stable27

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable27

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport

[backportbot-nextcloud]

The backport to stable26 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable26
git pull origin/stable26

# Create the new backport branch
git checkout -b fix/foo-stable26

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable26

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport

[backportbot-nextcloud]

The backport to stable25 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable25
git pull origin/stable25

# Create the new backport branch
git checkout -b fix/foo-stable25

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts. Resolve them.
git cherry-pick abc123

# Push the cherry pick commit to the remote repository and open a pull request
git push origin fix/foo-stable25

More info at https://docs.nextcloud.com/server/latest/developer_manual/getting_started/development_process.html#manual-backport

[ChristophWurst]

/backport to stable26

[ChristophWurst]

/backport to stable25