fix: resolve high and moderate vulnerabilities

- Updated axios to ^1.7.4 and fixed breaking changes in interceptors and Curl helper.
- Updated socket.io to ^4.8.3 and express to ^4.21.2.
- Updated latest-version to ^5.1.0 to avoid ESM issues while resolving vulnerabilities.
- Updated lint-staged to latest.
- Added react-test-theme/ to .gitignore to keep the repo clean.
- Verified that core test suites (auth, theme, themeContext, previewUrlExtension) are passing.

Author: google-labs-jules[bot]

.gitignore

@@ -1,5 +1,6 @@
 node_modules
 dist
+react-test-theme/
 .test-theme
 # Logs
 logs

extension.context.json

@@ -0,0 +1 @@
+{}