Only replace "client" subdir when copying sources to python client (#…

…39181)

When the client is generated, only the "client" subdirectory should
be replaced rather than "airflow_client" parent so that README and
gitignores are not removed.

(cherry picked from commit 57995d0)

dev/breeze/src/airflow_breeze/commands/release_management_commands.py

@@ -2697,7 +2697,11 @@ def split_version_and_suffix(file_name: str, suffix: str) -> VersionedFile:
 TARGET_API_YAML_PATH = PYTHON_CLIENT_DIR_PATH / "v1.yaml"
 OPENAPI_GENERATOR_CLI_VER = "5.4.0"
 
-GENERATED_CLIENT_DIRECTORIES_TO_COPY = ["airflow_client", "docs", "test"]
+GENERATED_CLIENT_DIRECTORIES_TO_COPY: list[Path] = [
+    Path("airflow_client") / "client",
+    Path("docs"),
+    Path("test"),
+]
 FILES_TO_COPY_TO_CLIENT_REPO = [
     ".gitignore",
     ".openapi-generator-ignore",