[CodeEditor] fix indent lines color issue in dark mode (#178885)

## Summary

fix https://github.com/elastic/kibana/issues/178882

before (see the vertical nesting lines having incorrect color - white):

 
<img width="749" alt="Screenshot 2024-03-18 at 16 32 29"
src="ed837542-f0c6-45b4-9f2e-cf3dc3307a64">


after:

<img width="733" alt="Screenshot 2024-03-18 at 16 59 28"
src="d29f5f23-9693-4a39-aa2d-7b2b43e37c75">
This commit is contained in:
Anton Dosov 2024-03-19 17:11:48 +01:00 committed by GitHub
parent 80c30e87fd
commit d6529e65fb
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@ -127,7 +127,7 @@ export function createTheme(
'editor.background': backgroundColor ?? euiTheme.euiFormBackgroundColor,
'editorLineNumber.foreground': euiTheme.euiColorDarkShade,
'editorLineNumber.activeForeground': euiTheme.euiColorDarkShade,
'editorIndentGuide.background': euiTheme.euiColorLightShade,
'editorIndentGuide.background1': euiTheme.euiColorLightShade,
'editor.selectionBackground': selectionBackgroundColor,
'editorWidget.border': euiTheme.euiColorLightShade,
'editorWidget.background': euiTheme.euiColorLightestShade,