Move fix into _str_contains of ArrowExtensionArray

Author: Aniketsy

pandas/core/arrays/arrow/array.py

@@ -2455,9 +2455,8 @@ def _str_contains(self, pat, case=True, flags=0, na=lib.no_default, regex=True):
             pat = pat.pattern
             regex = True
         elif flags != 0:
-            raise NotImplementedError(
-                "ArrowExtensionArray does not support str.contains() with flags "
-                "for string patterns"
+            return BaseStringArrayMethods._str_contains(
+                self, pat, case, flags, na, regex
             )
 
         try: