Update documentation and scripts to replace 'package-dir' with 'emitter-output-dir' for TypeSpec configuration (#43170)

Author: ChenxiJiang333

eng/tools/azure-sdk-tools/packaging_tools/generate_utils.py

@@ -54,9 +54,9 @@ def del_outdated_generated_files(tsp: str):
     service_dir = typespec_python_config.get("service-dir") or content.get("parameters", {}).get("service-dir", {}).get(
         "default", ""
     )
-    package_dir = typespec_python_config.get("package-dir", "")
+    package_dir = typespec_python_config.get("emitter-output-dir", "").split("/")[-1]
     if not service_dir or not package_dir:
-        _LOGGER.info(f"do not find service-dir or package-dir in tspconfig.yaml: {tspconfig}")
+        _LOGGER.info(f"do not find service-dir or emitter-output-dir in tspconfig.yaml: {tspconfig}")
         return
     generated_files_dir = Path(service_dir) / package_dir / package_dir.split("-")[0]
     # remove outdated generated files

scripts/release_helper/python.py

@@ -147,10 +147,7 @@ def package_name_output_folder_from_tspconfig(self):
         emitters = yaml_contents.get("options", {})
         for emitter_name in emitters:
             if "/typespec-python" in emitter_name:
-                for dir in ["package-dir", "emitter-output-dir"]:
-                    self.package_name = emitters[emitter_name].get(dir, "").split("/")[-1]
-                    if self.package_name:
-                        break
+                self.package_name = emitters[emitter_name].get("emitter-output-dir", "").split("/")[-1]
                 break
 
     @property