Update CodeQL Action from v3 to v4

- Update github/codeql-action/init from @v3 to @v4
- Update github/codeql-action/analyze from @v3 to @v4

Fixes #21156

.github/workflows/codeql.yml

@@ -30,13 +30,13 @@ jobs:
       uses: actions/checkout@v4
 
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v3
+      uses: github/codeql-action/init@v4
       with:
         languages: ${{ matrix.language }}
         build-mode: ${{ matrix.build-mode }}
         config-file: .github/codeql/codeql-config.yml
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@v4
       with:
         category: "/language:${{matrix.language}}"

netbox/utilities/forms/mixins.py

@@ -188,11 +188,13 @@ class FilterModifierMixin:
             key = f'{model._meta.app_label}.{model._meta.model_name}'
             filterset_class = registry['filtersets'].get(key)
 
+        filterset = filterset_class() if filterset_class else None
+
         for field_name, field in self.fields.items():
             lookups = self._get_lookup_choices(field)
 
-            if filterset_class:
-                lookups = self._verify_lookups_with_filterset(field_name, lookups, filterset_class)
+            if filterset:
+                lookups = self._verify_lookups_with_filterset(field_name, lookups, filterset)
 
                 if len(lookups) > 1:
                     field.widget = FilterModifierWidget(
@@ -211,14 +213,8 @@ class FilterModifierMixin:
 
         return []
 
-    def _verify_lookups_with_filterset(self, field_name, lookups, filterset_class):
-        """Verify which lookups are actually supported by the FilterSet.
-
-        Args:
-            field_name: The name of the form field
-            lookups: List of (lookup_code, lookup_label) tuples to verify
-            filterset_class: The FilterSet class (not instance) to check against
-        """
+    def _verify_lookups_with_filterset(self, field_name, lookups, filterset):
+        """Verify which lookups are actually supported by the FilterSet."""
         verified_lookups = []
 
         for lookup_code, lookup_label in lookups:
@@ -227,7 +223,7 @@ class FilterModifierMixin:
             else:
                 filter_key = f'{field_name}__{lookup_code}' if lookup_code != 'exact' else field_name
 
-            if filter_key in filterset_class.base_filters:
+            if filter_key in filterset.filters:
                 verified_lookups.append((lookup_code, lookup_label))
 
         return verified_lookups