Improve moble UI again ✨ (#3226)

## Description:

- Fix HeadsUpMessage appearing above Settings modal
- Fix HeadsUpMessage appearing above Leaderboard
- Remove PlayerInfoOverlay show/hide animation (we need quick access to
the data!)

- Close PlayerInfoOverlay on tap outside the map (gray area)

- Fix error when tapping gray area outside the map
- Close PlayerInfoOverlay on click/tap on itself


## 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

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

FloPinguin

src/client/graphics/layers/UnitLayer.ts

@@ -146,6 +146,10 @@ export class UnitLayer implements Layer {
       event.y,
     );
 
+    if (!this.game.isValidCoord(cell.x, cell.y)) {
+      return;
+    }
+
     const clickRef = this.game.ref(cell.x, cell.y);
     if (!this.game.isOcean(clickRef)) {
       // No isValidCoord/Ref check yet, that is done for ContextMenuEvent later