Add composite: false for extension-ui to fully disable declaration emission

packages/extension-ui/tsconfig.build.json

@@ -4,8 +4,7 @@
     "baseUrl": "..",
     "outDir": "./build",
     "rootDir": "./src",
-    // extension-ui is not published to npm - declarations are not needed
-    // This also fixes TS2742 errors with styled-components v6 + TypeScript 5.5+
+    "composite": false,
     "declaration": false,
     "declarationMap": false,
     "emitDeclarationOnly": false