bug: fix nuke tile score (#749)

## Description:

Fix a bug with nuke tile scoring.

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [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

src/core/execution/FakeHumanExecution.ts

@@ -312,7 +312,7 @@ export class FakeHumanExecution implements Execution {
       }
       if (!this.player.canBuild(UnitType.AtomBomb, tile)) continue;
       const value = this.nukeTileScore(tile, silos, structures);
-      if (value > bestTile) {
+      if (value > bestValue) {
         bestTile = tile;
         bestValue = value;
       }