Fix shifted keys not matching shortcuts in kittens

Broke after keyboard refactoring for new keyboard protocol. Now a key
event will match a shortcut specification if either the mods and key
match or mods without shift and shifted key match. Fixes #3314

kitty/key_encoding.py

@@ -211,18 +211,14 @@ class KeyEvent(NamedTuple):
     def matches(self, spec: Union[str, ParsedShortcut], types: int = EventType.PRESS | EventType.REPEAT) -> bool:
         if not self.type & types:
             return False
-        q = self.mods
-        is_shifted = bool(self.shifted_key and self.shift)
-        if is_shifted:
-            q = self.mods & ~SHIFT
-            kq = self.shifted_key
-        else:
-            kq = self.key
         if isinstance(spec, str):
             spec = parse_shortcut(spec)
-        if q != spec.mods:
-            return False
-        return kq == spec.key_name
+        if (self.mods, self.key) == spec:
+            return True
+        is_shifted = bool(self.shifted_key and self.shift)
+        if is_shifted and (self.mods & ~SHIFT, self.shifted_key) == spec:
+            return True
+        return False
 
     def as_window_system_event(self) -> WindowSystemKeyEvent:
         action = defines.GLFW_PRESS

kitty/key_names.py

@@ -50,8 +50,6 @@ character_key_name_aliases = {
     'LEFT_BRACKET': '[',
     'RIGHT_BRACKET': ']',
 }
-for x in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ':
-    character_key_name_aliases[x] = x.lower()
 LookupFunc = Callable[[str, bool], Optional[int]]