Allow the asynchronous file watcher to initialize before modifying the file
--- ../tests/language/file.watch.liq	2026-10-10 14:16:38.494828788 +0300
+++ ../tests/language/file.watch.liq	2026-10-10 14:17:41.220273300 +0300
@@ -11,8 +11,9 @@
   fname = "/tmp/fw"
   file.write(data="abc", fname)
   file.watch(fname, {success := true})
-  file.write(data="xxx", fname)
   thread.delay(1.)
+  file.write(data="xxx", fname)
+  thread.delay(2.)
   if success() then test.pass() else test.fail() end
 end