fix(web): sweep every remaining fixture off level/experience/requiredLevel

Task 17 (final task) of Renown & Reputation Foundation. Fixes the last 3
compile errors blocking the web suite (app.spec.ts, world.store.spec.ts)
by aligning CharacterResponse fixtures to the real renown-only shape, and
removes the two remaining dead 'experience' reward-preview leftovers
(current-location fixture entry, location-icon glyph) now that the API
no longer seeds them. Full web suite: 24 files / 228 tests, all green,
for the first time this entire slice.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

apps/web/src/app/features/world/current-location.fixture.ts

@@ -171,7 +171,6 @@ export function burnedRoadFixture(
     ],
     rewardPreview: [
       { key: 'silver', label: 'Silber', iconKey: 'silver' },
-      { key: 'experience', label: 'Erfahrung', iconKey: 'experience' },
       { key: 'equipment', label: 'Ausrüstung', iconKey: 'equipment' },
       { key: 'material', label: 'Material', iconKey: 'material' },
     ],