ui: reduce HUD transparency for control, attacks, events, and hover panel (#3429)

## Description:

Reduce HUD transparency for better readability by making the Control
Panel, Attacks panel, Events/Chat panel, and Hover panel more opaque
while keeping a subtle blur effect.

## Please complete the following:

- [ x] I have added screenshots for all UI updates
- [ ] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [ ] 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:

HulKiora
Before :
<img width="518" height="134" alt="image"
src="https://github.com/user-attachments/assets/dd714a8e-5b8c-4754-b68d-a86a0f82afcf"
/>

After :
<img width="519" height="138" alt="image"
src="https://github.com/user-attachments/assets/828b88be-a071-474c-a4a2-80d1c679b3df"
/>

src/client/graphics/layers/GameRightSidebar.ts

@@ -175,7 +175,7 @@ export class GameRightSidebar extends LitElement implements Layer {
 
     return html`
       <aside
-        class=${`w-fit flex flex-row items-center gap-3 py-2 px-3 bg-gray-800/70 backdrop-blur-xs shadow-xs min-[1200px]:rounded-lg rounded-bl-lg transition-transform duration-300 ease-out transform text-white ${
+        class=${`w-fit flex flex-row items-center gap-3 py-2 px-3 bg-gray-800/92 backdrop-blur-sm shadow-xs min-[1200px]:rounded-lg rounded-bl-lg transition-transform duration-300 ease-out transform text-white ${
           this._isVisible ? "translate-x-0" : "translate-x-full"
         }`}
         @contextmenu=${(e: Event) => e.preventDefault()}