Fix normal radio report submission

The radio button was connected only to the emergency hold handlers, so a
normal Send request never reached _submit. Connect pressed for non-emergency
calls while keeping hold-to-confirm exclusive to emergencies, and add tests
for click, short-hold rejection and full emergency hold. Headless 249/249,
Python 94/94.

project.godot

@@ -12,7 +12,7 @@ config_version=5
 
 config/name="Gig Line"
 config/description="Workplace security simulation about observation, access verification, and proportionate escalation."
-config/version="0.8.0"
+config/version="0.8.1"
 run/main_scene="res://scenes/main.tscn"
 config/features=PackedStringArray("4.3", "GL Compatibility")