fix(validation): satisfy mypy for PDP validation and tests

- Add unreachable return after with block in _validate_pdp_with_edvise_read
- Use cast(Any, ...) in tests that pass non-callables to converter params

Made-with: Cursor

Author: chapmanhk

src/webapp/validation.py

@@ -996,6 +996,8 @@ def _validate_pdp_with_edvise_read(
                 failure_cases=[str(e)],
             ) from e
 
+    return {}  # Unreachable: every path above returns or raises
+
 
 # --------------------------------------------------------------------------- #
 # Main validation

src/webapp/validation_pdp_read_path_test.py

@@ -2,6 +2,7 @@
 
 import io
 from pathlib import Path
+from typing import Any, cast
 from unittest.mock import patch
 
 import pandas as pd
@@ -310,7 +311,7 @@ def test_validate_pdp_with_edvise_read_non_callable_cohort_converter_raises_hard
             enc="utf-8",
             model_list=["STUDENT"],
             institution_id="pdp",
-            pdp_cohort_converter_func="not a function",
+            pdp_cohort_converter_func=cast(Any, "not a function"),
         )
 
 
@@ -327,7 +328,7 @@ def test_validate_pdp_with_edvise_read_non_callable_course_converter_raises_hard
             enc="utf-8",
             model_list=["COURSE"],
             institution_id="pdp",
-            pdp_course_converter_func=123,
+            pdp_course_converter_func=cast(Any, 123),
         )