upgrade unit when building a unit of same type (#1328)

## Description:

When building a structure in the same location as a nearby structure, it
will update the existing structure instead of creating a new one.

Also fix ctrl+click shortcut to bring up the build menu.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

## Please put your Discord username so you can be contacted if a bug or
regression is found:

evan

src/client/graphics/GameRenderer.ts

@@ -71,6 +71,7 @@ export function createRenderer(
   }
   buildMenu.game = game;
   buildMenu.eventBus = eventBus;
+  buildMenu.transformHandler = transformHandler;
 
   const leaderboard = document.querySelector("leader-board") as Leaderboard;
   if (!emojiTable || !(leaderboard instanceof Leaderboard)) {