fix: show Spectate instead of Keep Playing on win modal when dead Closes #3058 (#3062)

## Description:                                                        
This PR resolves issue #3058 where the "win modal" incorrectly
displayed a **"Keep Playing"** button instead of **"Spectate"** when a
player's team won but the player themselves was already dead.
### The Problem
In WinModal.ts, the button text logic only checked `this.isWin`
(whether the team won) but didn't verify if the player was still alive.
This caused dead players on winning teams to see "Keep Playing"
instead of "Spectate".
### The Solution
Updated the button rendering logic in
`src/client/graphics/layers/WinModal.ts:82` to check both the win
condition AND the player's alive status:
```typescript
// Before
${this.isWin
? translateText("win_modal.keep")
: translateText("win_modal.spectate")}
// After
${this.isWin && this.game.myPlayer()?.isAlive()
? translateText("win_modal.keep")
    : translateText("win_modal.spectate")}
  ```                               
This approach maintains clean separation of concerns:
- this.isWin continues to represent whether the player's team won
(true/false)
- The button text logic now checks both team victory and player alive
status
- This ensures the correct button appears based on the player's actual
state
Behavior After Fix
- Alive players on the winning team → "Keep Playing"
- Dead players on the winning team → "Spectate"
- Any player on the losing team → "Spectate"
Testing Performed
1. Code Audit: Verified myPlayer().isAlive() correctly reflects the
eliminated state in Teams mode.
2. Build Verification: Ran npm run build and npm run build-prod to
ensure no regressions in the UI layer.
3. Type Safety: Ran tsc --noEmit to confirm the fix is fully compliant
with the project's TypeScript strictness.
---
Closes #3058
## 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:
ghadi8097

---------

Co-authored-by: iamlewis <lewismmmm@gmail.com>

src/client/graphics/layers/WinModal.ts

@@ -79,7 +79,7 @@ export class WinModal extends LitElement implements Layer {
             @click=${this.hide}
             class="flex-1 px-3 py-3 text-base cursor-pointer bg-blue-500/60 text-white border-0 rounded-sm transition-all duration-200 hover:bg-blue-500/80 hover:-translate-y-px active:translate-y-px"
           >
-            ${this.isWin
+            ${this.game.myPlayer()?.isAlive()
               ? translateText("win_modal.keep")
               : translateText("win_modal.spectate")}
           </button>