fix(lsp): reporting bogus capabilities in CodeActionKind #20678

Problem:
LSP client provides bogus capabilities in CodeActionKind.
LSP logs show this in the "initialize" message:
    codeActionKind = { valueSet = { "Empty", "QuickFix",
    "Refactor", "RefactorExtract", "RefactorInline", "RefactorRewrite",
    "Source", "SourceOrganizeImports", "", "quickfix", "refactor",
    "refactor.extract", "refactor.inline", "refactor.rewrite", "source",
    "source.organizeImports" }

Solution:
Only the values from the CodeActionKind table should be presented, not also the
keys.

fix #20657

runtime/lua/vim/lsp/protocol.lua

@@ -637,7 +637,7 @@ function protocol.make_client_capabilities()
         codeActionLiteralSupport = {
           codeActionKind = {
             valueSet = (function()
-              local res = vim.tbl_values(protocol.CodeActionKind)
+              local res = vim.tbl_values(constants.CodeActionKind)
               table.sort(res)
               return res
             end)(),