fix: bump ghostty-web to 0.4.1 with render loop resilience

Update ghostty-web to b0aa99e which wraps the requestAnimationFrame
render loop in try/catch. Previously, any exception in renderer.render()
or wasmTerm.getCursor() would silently kill the loop, permanently
freezing the terminal canvas while input continued to flow normally.

The fix ensures requestAnimationFrame is always re-scheduled and logs
errors to console for diagnosis. This addresses intermittent terminal
stalls that were not correlated with resize, focus, or user interaction.

bun.lock

@@ -5,7 +5,7 @@
     "": {
       "name": "webterm-frontend",
       "dependencies": {
-        "ghostty-web": "github:rcarmo/ghostty-web#2837b81646aa0c00bb5a2881b5a53400346c76de",
+        "ghostty-web": "github:rcarmo/ghostty-web#b0aa99e8d06069d4bda6ffae87c9de4bb17b2699",
       },
       "devDependencies": {
         "typescript": "^5.7.0",
@@ -13,7 +13,7 @@
     },
   },
   "packages": {
-    "ghostty-web": ["ghostty-web@git+ssh://git@github.com/rcarmo/ghostty-web.git#2837b81646aa0c00bb5a2881b5a53400346c76de", {}, "2837b81646aa0c00bb5a2881b5a53400346c76de"],
+    "ghostty-web": ["ghostty-web@github:rcarmo/ghostty-web#b0aa99e", {}, "rcarmo-ghostty-web-b0aa99e"],
 
     "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, ""],
   }

package.json

@@ -3,7 +3,7 @@
   "private": true,
   "type": "module",
   "dependencies": {
-    "ghostty-web": "github:rcarmo/ghostty-web#2837b81646aa0c00bb5a2881b5a53400346c76de"
+    "ghostty-web": "github:rcarmo/ghostty-web#b0aa99e8d06069d4bda6ffae87c9de4bb17b2699"
   },
   "devDependencies": {
     "typescript": "^5.7.0"