chore: update gen code

Author: ZGaopeng

.github/workflows/run_gen_code.yml

@@ -42,7 +42,7 @@ jobs:
         id: prepare_target_branch
         uses: ./.github/actions/prepare_branch
         with:
-          target_branch: ${{ inputs.target_branch }}
+          target_branch: ${{ inputs.target_branch || github.ref_name}}
           pub_version: ""
           branch_group: "special"
           working_directory: ./