fix: exclude nostr-signer-capacitor-plugin from Capacitor APK build

Co-authored-by: shakespeare.diy <assistant@shakespeare.diy>

vite.config.ts

@@ -31,6 +31,7 @@ export default defineConfig(() => ({
   optimizeDeps: {
     exclude: ['@lightninglabs/lnc-web'],
   },
+
   build: {
     // Strip console.log/warn/debug in production (keeps console.error for real errors)
     minify: 'esbuild',
@@ -43,6 +44,7 @@ export default defineConfig(() => ({
         // that fail silently in Android WebView local file serving
         manualChunks: undefined,
         inlineDynamicImports: true,
+        external: ['nostr-signer-capacitor-plugin'],
       } : {
         // Split large vendor libraries into separate cacheable chunks.
         // Users only re-download a chunk when that specific library updates.