refactor(hold-tap): improve switch statements

app/src/behaviors/behavior_hold_tap.c

@@ -278,9 +278,10 @@ static inline const char *flavor_str(enum flavor flavor) {
         return "balanced";
     case FLAVOR_TAP_PREFERRED:
         return "tap-preferred";
-    }
+    default:
         return "UNKNOWN FLAVOR";
     }
+}
 
 static inline const char *status_str(enum status status) {
     switch (status) {
@@ -292,9 +293,10 @@ static inline const char *status_str(enum status status) {
         return "hold-interrupt";
     case STATUS_TAP:
         return "tap";
-    }
+    default:
         return "UNKNOWN STATUS";
     }
+}
 
 static inline const char *decision_moment_str(enum decision_moment decision_moment) {
     switch (decision_moment) {
@@ -308,9 +310,10 @@ static inline const char *decision_moment_str(enum decision_moment decision_mome
         return "quick-tap";
     case HT_TIMER_EVENT:
         return "timer";
-    }
+    default:
         return "UNKNOWN STATUS";
     }
+}
 
 static int press_binding(struct active_hold_tap *hold_tap) {
     struct zmk_behavior_binding_event event = {