Sending a message while a permission prompt is open now denies every
pending permission in the session subtree (optimistically, then formally
via permission.reply reject) and queues the message for next-turn
delivery, mirroring the question-dismiss path from #1740.
- Add dismissOpenPermissionsForSession plus isPermissionRequestNotFoundError
and removePermissionRequestFromChildStores helpers to session-actions
- Extend dismissPermission with not-found cleanup, parallel to rejectQuestion
- Wire handleSubmit to deny permissions and dismiss questions together,
queueing once if either prompt type was open
- Add unit tests mirroring the dismissOpenQuestionsForSession suite
Closes#1958
Tom Rochette
d50cb5becc