feat(client): add KYC for event joining

Signed-off-by: Noa Virellia <noa@requiem.garden>

client/cms/src/lib/utils.ts

@@ -1,3 +1,4 @@
+import type { Query } from '@tanstack/react-query';
 import type { ClassValue } from 'clsx';
 // eslint-disable-next-line unicorn/prefer-node-protocol
 import { Buffer } from 'buffer';
@@ -17,3 +18,12 @@ export function base64ToUtf8(base64: string): string {
 export function utf8ToBase64(utf8: string): string {
   return Buffer.from(utf8, 'utf-8').toString('base64');
 }
+
+export function invalidateBlurry(id: string) {
+  return {
+    predicate: (query: Query<unknown, Error, unknown, readonly unknown[]>) => {
+      const key = query.queryKey[0] as { _id: string };
+      return key?._id === id;
+    },
+  };
+}