fix(lsp): revert buf_versions deprecation/replacement (#29217)

* Revert "fix(lsp): account for changedtick version gap on modified reset (#29170)"

This reverts commit 2e6d295f79.

* Revert "refactor(lsp): replace util.buf_versions with changedtick (#28943)"

This reverts commit 5c33815448.

runtime/lua/vim/lsp/util.lua

@@ -502,11 +502,6 @@ function M.apply_text_document_edit(text_document_edit, index, offset_encoding)
     should_check_version = false
   end
 
-  -- changedtick increases on save but server only receives version updates
-  -- on line changes (via didChange)
-  -- This allows a gap of 1 to account for the servers outdated view
-  local version_offset = vim.b[bufnr].modified and 0 or 1
-
   -- `VersionedTextDocumentIdentifier`s version may be null
   --  https://microsoft.github.io/language-server-protocol/specification#versionedTextDocumentIdentifier
   if
@@ -514,7 +509,8 @@ function M.apply_text_document_edit(text_document_edit, index, offset_encoding)
     and (
       text_document.version
       and text_document.version > 0
-      and vim.b[bufnr].changedtick > (text_document.version + version_offset)
+      and M.buf_versions[bufnr]
+      and M.buf_versions[bufnr] > text_document.version
     )
   then
     print('Buffer ', text_document.uri, ' newer than edits.')
@@ -2206,16 +2202,9 @@ function M._refresh(method, opts)
   end
 end
 
----@nodoc
----@deprecated
----@type table<integer,integer>
-M.buf_versions = setmetatable({}, {
-  __index = function(_, bufnr)
-    vim.deprecate('vim.lsp.util.buf_versions', 'vim.b.changedtick', '0.13')
-    return vim.b[bufnr].changedtick
-  end,
-})
-
 M._get_line_byte_from_position = get_line_byte_from_position
 
+---@nodoc
+M.buf_versions = {} ---@type table<integer,integer>
+
 return M