sync filter entries with track and listen labels

- Auto-populate `audio.filters` from `audio.listen` instead of the full audio labelmap, matching how `objects.filters` is keyed by `track` (no longer need to populate the full audio labelmap, which was added in #22630)
- Synthesize the matching filter entries in the settings form on load so each track/listen label shows its collapsible after a profile is selected, since the backend's auto-populate only runs at config init

web/src/components/config-form/sections/BaseSection.tsx

@@ -22,7 +22,7 @@ import {
   modifySchemaForSection,
   getEffectiveDefaultsForSection,
   sanitizeOverridesForSection,
-  synthesizeMissingObjectFilters,
+  synthesizeMissingFilters,
 } from "./section-special-cases";
 import { getSectionValidation } from "../section-validations";
 import { useConfigOverride } from "@/hooks/use-config-override";
@@ -370,7 +370,7 @@ export function ConfigSection({
       return {};
     }
 
-    return synthesizeMissingObjectFilters(
+    return synthesizeMissingFilters(
       sectionPath,
       rawSectionValue,
       modifiedSchema ?? undefined,