Update Q1 and Q2 for keychron (#18713)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: jpe230 <pablin.123.ra@gmail.com>

keyboards/keychron/common/keychron_common.h

@@ -15,10 +15,17 @@
  */
 
 #include "stdint.h"
+#ifdef VIA_ENABLE
+#    include "via.h"
+#endif
 #include "quantum_keycodes.h"
 
 enum custom_keycodes {
+#ifdef VIA_ENABLE
+    KC_MISSION_CONTROL = USER00,
+#else
     KC_MISSION_CONTROL = SAFE_RANGE,
+#endif
     KC_LAUNCHPAD,
     KC_LOPTN,
     KC_ROPTN,