Fix incorrect MODIFIER_MASK value

Updated key modifier mask and documented API change

Changed the old value

Changed the old value inside the .expected file

Resolved Conflicts

Moved changes to the end

Author: Yelloween10

core/os/keyboard.h

@@ -249,7 +249,7 @@ enum class Key {
 
 enum class KeyModifierMask {
 	CODE_MASK = ((1 << 23) - 1), ///< Apply this mask to any keycode to remove modifiers.
-	MODIFIER_MASK = (0x7F << 22), ///< Apply this mask to isolate modifiers.
+	MODIFIER_MASK = (0x7F << 24), ///< Apply this mask to isolate modifiers.
 	//RESERVED = (1 << 23),
 	CMD_OR_CTRL = (1 << 24),
 	SHIFT = (1 << 25),

doc/classes/@GlobalScope.xml

@@ -2365,7 +2365,7 @@
 		<constant name="KEY_CODE_MASK" value="8388607" enum="KeyModifierMask" is_bitfield="true">
 			Key Code mask.
 		</constant>
-		<constant name="KEY_MODIFIER_MASK" value="532676608" enum="KeyModifierMask" is_bitfield="true">
+		<constant name="KEY_MODIFIER_MASK" value="2130706432" enum="KeyModifierMask" is_bitfield="true">
 			Modifier key mask.
 		</constant>
 		<constant name="KEY_MASK_CMD_OR_CTRL" value="16777216" enum="KeyModifierMask" is_bitfield="true">

misc/extension_api_validation/4.3-stable.expected

@@ -261,3 +261,10 @@ Validate extension JSON: Error: Field 'classes/PointLight2D/properties/texture':
 
 Property hints modified to disallow resource types that don't work. The types allowed are now more restricted, but this change only impacts the editor and not the actual exposed API. No adjustments should be necessary.
 Decal properties were previously changed from Texture to Texture2D in 4.2, so we need to silence those warnings too.
+
+
+GH-98441
+--------
+Validate extension JSON: Error: Field 'global_enums/KeyModifierMask/values/KEY_MODIFIER_MASK': value changed value in new API, from 5.32677e+08 to 2130706432.
+
+Key modifier mask value corrected. API change documented for compatibility.