test: add mutex to clipboard copy & paste operation to reduce flaky (#11884)

tests/kit/tsconfig.json

@@ -8,6 +8,7 @@
   "include": ["./src"],
   "references": [
     { "path": "../../tools/utils" },
-    { "path": "../../blocksuite/affine/all" }
+    { "path": "../../blocksuite/affine/all" },
+    { "path": "../../packages/common/infra" }
   ]
 }