Support universal dot completion in editor tooling (#7226)

* Port PR from rescript-vscode

* Run all tests locally

* Revert changes in CompletionBackEnd and TypeUtils

* Revert CompletionFrontEnd.ml

* Remove some unnecessary recs

* Whoops

* Add changelog entry

Author: nojaf

Diff for: CHANGELOG.md

@@ -15,6 +15,7 @@
 #### :house: Internal
 
 - AST cleanup: use inline record for Pexp_fun. https://github.com/rescript-lang/rescript/pull/7213
+- Add support for "dot completion everywhere" (Ported from https://github.com/rescript-lang/rescript-vscode/pull/1054). https://github.com/rescript-lang/rescript/pull/7226
 
 #### :nail_care: Polish
 

Diff for: analysis/src/Codemod.ml

@@ -41,7 +41,7 @@ let transform ~path ~pos ~debug ~typ ~hint =
         if debug then print_endline "Found no result";
         exit 1
       | Some switchExpr ->
-        printExpr ~range:(Xform.rangeOfLoc switchExpr.pexp_loc) switchExpr)
+        printExpr ~range:(Loc.rangeOfLoc switchExpr.pexp_loc) switchExpr)
     | _ ->
       if debug then print_endline "Mismatch in expected structure";
       exit 1)