The pause debugger screen should be shown for both pausing manually
(interrupt) and hitting a breakpoint.
Reuse the logic for pausing breakpoints to pause the debugger when the
user manually clicks the pause button.
Rename the pause event to interrupt to match the language of the
DevTools client and to avoid confusion with paused frames, which can
happen on interrupt or on a breakpoint.
https://github.com/user-attachments/assets/ceb0007d-0e57-44d6-a159-55980ff8b517
Testing: New DevTools test and manual testing.
Part of: #36027
cc @atbrakhi
---------
Signed-off-by: eri <eri@igalia.com>
Co-authored-by: atbrakhi <atbrakhi@igalia.com>
