fix: mock feature flags in useCreditsBadge test

The test was failing because subscriptionTiersEnabled defaults to true,
causing isCreditsBadge to check for componentIconSvg instead of unicode.
Mock the feature flag to false to test legacy badge behavior.

tests-ui/tests/composables/node/useCreditsBadge.test.ts

@@ -17,6 +17,14 @@ vi.mock('@/stores/workspace/colorPaletteStore', () => ({
   })
 }))
 
+vi.mock('@/composables/useFeatureFlags', () => ({
+  useFeatureFlags: () => ({
+    flags: {
+      subscriptionTiersEnabled: false // Test legacy badge behavior
+    }
+  })
+}))
+
 const { updateSubgraphCredits } = usePriceBadge()
 
 const mockNode = new LGraphNode('mock node')