fix(lib): prevent wildcards from incorrectly marking child patterns as infallible

When a pattern appears under a wildcard parent (like "(_ (expr))"), we
were incorrectly marking it as infallible. The parent_pattern_guaranteed
flag only means the pattern will match after finding the right wildcard
parent, not that any wildcard parent will work.

lib/src/query.c

@@ -3004,7 +3004,7 @@ bool ts_query__step_is_fallible(
   return (
     next_step->depth != PATTERN_DONE_MARKER &&
     next_step->depth > step->depth &&
-    !next_step->parent_pattern_guaranteed
+    (!next_step->parent_pattern_guaranteed || step->symbol == WILDCARD_SYMBOL)
   );
 }