lsp: Use `LspCommand.check_capabilities` consistently (#14733)

This is a follow-up to #14666 in which I noticed that we don't need that
additional check, since each request will check whether it's supported
via the call to `check_capabilities` before sending the request.


Release Notes:

- N/A
76ce1a8f50Thorsten Ball committed on 7/18/2024, 12:38:27 PM· committed by GitHubparent80558a3
2 files changedLine totals unavailable