Miscellaneous Fixes (#21050)

* Don't add to history when opening search dialog

* Update caniuse

* Revamp the history handling for dialog components

* clarify audio transcription docs

* Use titlecase helper

* Allow running object clasasification on stationary objects

* small spacing tweaks for tablets

* require admin role to delete users

* explicitly prevent deletion of admin user

---------

Co-authored-by: Josh Hawkins <32435876+hawkeye217@users.noreply.github.com>

frigate/api/auth.py

@@ -578,8 +578,14 @@ def create_user(
     return JSONResponse(content={"username": body.username})
 
 
-@router.delete("/users/{username}")
-def delete_user(username: str):
+@router.delete("/users/{username}", dependencies=[Depends(require_role(["admin"]))])
+def delete_user(request: Request, username: str):
+    # Prevent deletion of the built-in admin user
+    if username == "admin":
+        return JSONResponse(
+            content={"message": "Cannot delete admin user"}, status_code=403
+        )
+
     User.delete_by_id(username)
     return JSONResponse(content={"success": True})