fix(ci): resolve mypy and check_code_and_doc_quality CI failures (#21812)

- fix(mypy): suppress [misc] type error in common_utils.py for cls.__init__ access
- fix(mypy): move type: ignore comment to correct line in test_eval.py (line 232 not 231)
- fix(mypy): suppress [misc] and pre-existing pyright errors in vertex_ai_non_gemini.py
- fix(check_licenses): strip inline comments before parsing requirements.txt lines so CVE comments don't break packaging.requirements.Requirement()
- fix(router_coverage): add _merge_tools_from_deployment and _invalidate_access_groups_cache to ignored list (private helpers tested indirectly)

tests/code_coverage_tests/check_licenses.py

@@ -214,9 +214,9 @@ class LicenseChecker:
         try:
             with open(requirements_file) as f:
                 requirements = [
-                    Requirement(line.strip())
+                    Requirement(line.split("#")[0].strip())
                     for line in f
-                    if line.strip() and not line.startswith("#")
+                    if line.split("#")[0].strip() and not line.startswith("#")
                 ]
         except Exception as e:
             print(f"Error parsing {requirements_file}: {str(e)}")

tests/code_coverage_tests/router_code_coverage.py

@@ -78,6 +78,8 @@ ignored_function_names = [
     "__init__",
     "avector_store_create",  # Tested via proxy vector_store_endpoints (files lack "router" in name)
     "_override_vector_store_methods_for_router",  # No-op placeholder, called during Router init
+    "_merge_tools_from_deployment",  # Tested indirectly via _update_kwargs_with_deployment (test files lack "router" in name)
+    "_invalidate_access_groups_cache",  # Tested indirectly via set_model_list, upsert_model etc. (test files lack "router" in name)
 ]