fix: ext-host editors error on closing diff editors

[erha19]

Types

• 🐛 Bug Fixes

Background or solution

Changelog

fix ext-host editors error on closing diff editors

[hacke2]

LGTM

[codecov-commenter]

Codecov Report

Merging #261 (741cf19) into v2.13.x (56d9874) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           v2.13.x     #261      +/-   ##
===========================================
- Coverage    59.40%   59.40%   -0.01%     
===========================================
  Files         1180     1180              
  Lines        72338    72338              
  Branches     14972    14972              
===========================================
- Hits         42970    42969       -1     
- Misses       26764    26765       +1     
  Partials      2604     2604              

Impacted Files	Coverage Δ
...nsion/src/browser/vscode/api/main.thread.editor.ts	44.83% <ø> (ø)
...erences/src/browser/preference-settings.service.ts	79.16% <0.00%> (-0.70%)	⬇️

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