fix: app.getAppPath() returning default-app path for files or directories without package.json (#18763)

spec/fixtures/api/app-path/lib/index.js

@@ -0,0 +1,10 @@
+const { app } = require('electron')
+
+const payload = {
+  appPath: app.getAppPath()
+}
+
+process.stdout.write(JSON.stringify(payload))
+process.stdout.end()
+
+process.exit()