status/system: Add context to a11y label
"Lock Screen" can refer to the lock screen component or the action of locking the screen. Add context to clarify that the button refers to the latter.
Fixes #5852 (closed)
"Lock Screen" can refer to the lock screen component or the action of locking the screen. Add context to clarify that the button refers to the latter.
Fixes #5852 (closed)