add flag for forcing code_gen for v2 task block runs (#3576)

skyvern/services/block_service.py

@@ -62,6 +62,7 @@ async def execute_blocks(
     user_id: str,
     browser_session_id: str | None = None,
     block_outputs: dict[str, t.Any] | None = None,
+    code_gen: bool | None = None,
 ) -> None:
     """
     Runs one or more blocks of a workflow.
@@ -114,4 +115,5 @@ async def execute_blocks(
         api_key=api_key,
         block_labels=block_labels,
         block_outputs=block_outputs,
+        code_gen=code_gen,
     )