Test Search Editor

[JacksonKearl]

Refs: #16488, #23931

• anyOS @bowdenk7
• anyOS @gregvanl
• anyOS @sandy081

Complexity: 3

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Search Editors are going GA!

Test:

• Opening a search editor from existing viewlet results works as expected
• Opening a new search editor using command pallet works as expected
• In the search editor:
  • Highlights locations persist across reloads and saving the editor (it is a known issue that they will go away if the editor is closed then reopened)
  • F4 (go to next search result) and Shift+F4 (previous) work
  • Cmd+Shift+L (select all search results) works
• Overall experience is smooth with large files
• Extension for writing search result editor changes to workspace works reasonably well: https://marketplace.visualstudio.com/items?itemName=jakearl.search-editor-apply-changes