chore(typescript): remove deprecated baseUrl from tsconfig

TypeScript 6 deprecates baseUrl and will stop supporting it in TypeScript 7.
Keep the @/* path mapping working without baseUrl.

tsconfig.app.json

@@ -16,7 +16,6 @@
     "jsx": "react-jsx",
 
     /* Alias */
-    "baseUrl": ".",
     "paths": {
       "@/*": ["./src/*"]
     },

tsconfig.json

@@ -5,7 +5,6 @@
     { "path": "./tsconfig.node.json" }
   ],
   "compilerOptions": {
-    "baseUrl": ".",
     "paths": {
       "@/*": ["./src/*"]
     }