macros: Do not catch keys not intended for us

Keys that have the IS_INTERNAL flag set can also have the same bit set as the
IS_MACRO bit, yet, we do not want to handle those as if they were macros. So
teach `handleMacroEvent` to skip keys with that bit set.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

libraries/Keyboardio-Macros/src/Keyboardio-Macros.cpp

@@ -45,7 +45,7 @@ void Macros_::play(const macro_t *macro_p) {
 }
 
 static bool handleMacroEvent(Key mappedKey, byte row, byte col, uint8_t keyState) {
-    if (!(mappedKey.flags & (SYNTHETIC|IS_MACRO)))
+    if (!(mappedKey.flags & (SYNTHETIC|IS_MACRO)) || (mappedKey.flags & IS_INTERNAL))
         return false;
 
     const macro_t *m = macroAction(mappedKey.rawKey, keyState);