fix: remove alert-dialog component and radix dep, fixes Docker build

Deleted alert-dialog.tsx and removed @radix-ui/react-alert-dialog.
Revoke confirmation already uses plain Dialog -- no new deps needed.
Clean bun.lock for Docker Linux compatibility.

Author: DevanshuNEU

frontend/bun.lock

@@ -15,7 +15,6 @@
   },
   "dependencies": {
     "@radix-ui/react-accordion": "^1.2.12",
-    "@radix-ui/react-alert-dialog": "^1.1.15",
     "@radix-ui/react-avatar": "^1.1.11",
     "@radix-ui/react-checkbox": "^1.3.3",
     "@radix-ui/react-collapsible": "^1.1.12",