test: make test-fs-watchfile reliable
Fixes: https://github.com/nodejs/node/issues/13377
Checklist
-
make -j4 test(UNIX), orvcbuild test(Windows) passes -
commit message follows commit guidelines
Affected core subsystem(s)
test fs
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Fixes: https://github.com/nodejs/node/issues/13377
make -j4 test (UNIX), or vcbuild test (Windows) passestest fs