net: TestUnixUnlink/FileListener failures

[gopherbot]

#!watchflakes
default <- pkg == "net" && test == "TestUnixUnlink/FileListener"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestUnixUnlink/FileListener
--- FAIL: TestUnixUnlink/FileListener (0.05s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "net" && test == "TestUnixUnlink/FileListener"

2025-09-05 15:18 gotip-windows-amd64-longtest go@3492e426 net.TestUnixUnlink/FileListener (log)

=== RUN   TestUnixUnlink/FileListener
--- FAIL: TestUnixUnlink/FileListener (0.05s)

— watchflakes