refactor: refactor file-watcher test case

[opensumi]

Types

• 🪚 Refactors
• ⏱ Tests

Background or solution

#2354

Changelog

• change file server watcher to private for every case

Backport from #2463 230b156

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.05 🎉

Comparison is base (5d8e4fc) 57.74% compared to head (bd10eba) 57.79%.

Additional details and impacted files

@@            Coverage Diff             @@
##            v2.23    #2493      +/-   ##
==========================================
+ Coverage   57.74%   57.79%   +0.05%     
==========================================
  Files        1323     1323              
  Lines       83471    83534      +63     
  Branches    17374    17390      +16     
==========================================
+ Hits        48198    48277      +79     
+ Misses      32051    32037      -14     
+ Partials     3222     3220       -2     

Flag	Coverage Δ
jsdom	52.80% <100.00%> (+0.04%)	⬆️
node	16.75% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
packages/core-common/src/localize.ts	98.61% <100.00%> (ø)

... and 6 files with indirect coverage changes

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.