further increase timeout for directory deletion test

Summary:
For https://www.internalfb.com/intern/test/281475163750144

Following D66161654 where the timeout of the test was increased **5s -> 30s**, we still have some tests timeout.
Some test actually succeed "in the last moment" running around 30s, so I'd like to increase the timeout **30s -> 45s**.
{F1973766969}

Failed test example:
https://www.internalfb.com/intern/testinfra/diagnostics/10133099222794991.281475163750144.1733907950/
In run:
https://www.internalfb.com/intern/testinfra/testconsole/testrun/10133099222794991/

Reviewed By: hoxyq

Differential Revision: D67087998

fbshipit-source-id: 9533e3d81c683f382e6c058884c31fd2ced1854e

packages/metro-file-map/src/watchers/__tests__/integration-test.js

@@ -268,7 +268,7 @@ describe.each(Object.keys(WATCHERS))(
         );
       },
       // We see occasional failures in CI with default 5s timeout.
-      30000,
+      45000,
     );
   },
 );