Redesign target fx (#2143)

## Description:

Resize the target fx.
It's still a little too big in my opinion, but it becomes very blurry
when shrinked down.


https://github.com/user-attachments/assets/c3cda98d-ed57-4933-93b4-1cc7f1cb8e50

The UI Layer should probably not be bound to the zoom level so we can
have a sharper UI.

## 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:

IngloriousTom

src/client/graphics/layers/FxLayer.ts

@@ -116,11 +116,6 @@ export class FxLayer implements Layer {
     this.allFx.push(textFx);
   }
 
-  addTargetFx(x: number, y: number) {
-    const fx = new TargetFx(x, y, 1200, 12);
-    this.allFx.push(fx);
-  }
-
   onUnitEvent(unit: UnitView) {
     switch (unit.type()) {
       case UnitType.TransportShip: {
@@ -134,7 +129,7 @@ export class FxLayer implements Layer {
           const x = this.game.x(t);
           const y = this.game.y(t);
           // persistent until boat finishes or retreats
-          const fx = new TargetFx(x, y, 0, 12, true);
+          const fx = new TargetFx(x, y, 0, true);
           this.allFx.push(fx);
           this.boatTargetFxByUnitId.set(unit.id(), fx);
         }