fix(dav): Fix user status "Undefined array key 0 at StatusService.php…

[nickvergessen]

…#98"

• Resolves hundred of issues we have in our log:

│[error] 2024-01-05T10:43:23.000 PHP              Undefined array key 0 at …/apps/dav/lib/CalDAV/Status/StatusService.php#98           │
 Received Time: 2024-01-05T10:43:23.000 -- 3 days ago                                                                                                                       │
 Known message fields for table nextcloud_log:                                                                                                                              │
 ├ reqId         = UJgUkgYIMW4vZQHZSA7X                                                                                                                                     │
 ├ level         = 3                                                                                                                                                        │
 ├ time          = 2024-01-05T10:43:23.000                                                                                                                                  │
 ├ remoteAddr    = 2a…                                                                                                                  │
 ├ user          = f…n                                                                                                                                                   │
 ├ app           = PHP                                                                                                                                                      │
 ├ method        = PUT                                                                                                                                                      │
 ├ url           = /ocs/v2.php/apps/user_status/api/v1/heartbeat?format=json                                                                                                │
 ├ body          = Undefined array key 0 at …/apps/dav/lib/CalDAV/Status/StatusService.php#98                                          │
 ├ message       = Undefined array key 0 at …/apps/dav/lib/CalDAV/Status/StatusService.php#98                                          │
 ├ userAgent     = Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:120.0) Gecko/20100101 Firefox/120.0                                                                     │
 ├ version       = 28.0.1.1                                                                                                                                                 │
 ├ data          = {"app":"PHP"}                                                                                                                                            │
 JSON fields:                                                                                                                                                               │
 ├ jget(data,'/app') = "PHP"                                                                                                                                                │
 Discovered fields for logline table from message format: Undefined array key # at #                                                                                        │
 ├ col_0 = 0                                                                                                                                                                │
 └ col_1 = …/apps/dav/lib/CalDAV/Status/StatusService.php#98  

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)

[nickvergessen]

/backport to stable28

[nickvergessen]

Red CI is a regression from #42544

[joshtrichards]

Possibly related / possibly fixes #42464

[tcitworld]

Possibly related / possibly fixes #42464

This looks like it's close, but this fix shouldn't affect this issue.

[nickvergessen]

Rebasing for green CI

[skjnldsv]

/skjnldsv-backport to stable28

[backportbot-nextcloud]

The backport to stable28 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable28
git pull origin stable28

# Create the new backport branch
git checkout -b fix/foo-stable28

# 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-stable28

Error: Unknown error

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