feat(validation): check the contents of a raw option that holds a dict or list

plugins/action/validate_inputs.py

@@ -79,9 +79,11 @@ class _Validator:
         if "choices" in spec and value not in spec["choices"]:
             shown = "" if spec.get("no_log") else f", got {value!r}"
             self.errors.append(f"{path}: must be one of {', '.join(map(str, spec['choices']))}{shown}")
-        if kind == "dict" and "options" in spec:
+        # Keyed on the value, not the declared type, so a `raw` option ("false, or a dict of...") is
+        # still checked whenever it holds a dict or a list.
+        if "options" in spec and isinstance(value, Mapping):
             self.check_options(spec["options"], value, path)
-        elif kind == "list" and "elements" in spec:
+        elif "elements" in spec and isinstance(value, list):
             element = {"type": spec["elements"]}
             if "options" in spec:
                 element["options"] = spec["options"]