Make flare gun explode, damage and stun the player when used with the wrong ammo (#22349)

* Flare gun can now only be loaded with actual flares

* Make flare gun loadable with other shells, but destroy it and damage and stun the user when used

* tweak

* Logic fix + QOL add-ons

* damageOnWrongAmmo in gun component

* cleanup

Resources/Locale/en-US/weapons/ranged/gun.ftl

@@ -6,6 +6,7 @@ gun-selected-mode = Selected {$mode}
 gun-disabled = You can't use guns!
 gun-clumsy = The gun blows up in your face!
 gun-set-fire-mode = Set to {$mode}
+gun-component-wrong-ammo = Wrong ammo!
 
 # SelectiveFire
 gun-SemiAuto = semi-auto