Only show categories for v2 integrations

This avoids having a category filter show up for an integration that
is v1-only (like Magento 2), which effectively just filters out all
integrations.

src/integrations.ts

@@ -122,4 +122,6 @@ export const INTEGRATIONS: Integration[] = [
   },
 ];
 
-export const TAGS = new Set(INTEGRATIONS.flatMap((i) => i.tags));
+export const TAGS = new Set(
+  INTEGRATIONS.filter((i) => i.fcVersion === "v2").flatMap((i) => i.tags)
+);