fix(files): filter non batch actions in header

[skjnldsv]

• Resolves: [Bug]: Setting reminder with multi select files menu fails #54152

Summary

In the table header, we only want actions that do have a batch option defined.
We do allow top-level actions without batch option if they're top-level parents and have valid children (i.e having an execBatch method defined) here

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)

[skjnldsv]

/compile rebase

[skjnldsv]

/backport 68404d5 to stable31

[skjnldsv]

/backport 68404d5 to stable30

[skjnldsv]

/compile rebase

[AndyScherzinger]

/compile rebase

[backportbot]

The backport to stable30 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable30
git pull origin stable30

# Create the new backport branch
git checkout -b backport/54329/stable30

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 68404d5

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/54329/stable30

Error: Failed to check for changes with origin/stable30: No changes found in backport branch

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Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.