[Bug] File action sheet shows no actions at all for locked files #17845

Steps to reproduce

1. Lock a file (e.g. open a document in the Text or OnlyOffice app, or use "Lock file" from another client).
2. In the Android app, open the folder that contains the locked file.
3. Tap the three-dot menu of that file.

Actual behaviour

The bottom sheet shows the file name and a "Locked by the app …" row, but no actions at all — not even edit, rename, download or delete. The sheet is short and cannot be expanded by dragging.

Expected behaviour

The regular action list is shown, plus the lock information row.

Cause

FileActionsBottomSheet.handleState() calls displayLockInfo() before displayActions():

if (state.lockInfo != null) {
    displayLockInfo(state.lockInfo)
}
displayActions(state.titleFile, state.actions)

displayActions() starts with if (binding.fileActionsList.isNotEmpty()) return, so as soon as the lock row has been appended, every action is skipped. Only the lock row ends up in the sheet.

Suggested fix

Render the actions first and append the lock info afterwards:

displayActions(state.titleFile, state.actions)
if (state.lockInfo != null) {
    displayLockInfo(state.lockInfo)
}

This is also what makes the unlock action reachable — see #17838.

Environment

• Nextcloud Android 35.0.1 (Play) and current master, Android 16, Pixel 9 Pro
• Server: Nextcloud 34 (AIO), files_lock 34.0.1

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