fix: remove -p flag from test script to prevent git operation errors

The -p flag in npm-run-all was causing tests to run in parallel, which led to 'Cannot log after tests are done' errors with git operations. These errors don't appear when running test:extension alone.

The issue occurs because git-based tests create temporary directories and run async operations that can interfere with each other when executed in parallel. Running tests sequentially resolves this cleanly.

While it might increase total test time slightly, it ensures more reliable and consistent test results.

Author: StevenTCramer

package.json

@@ -316,7 +316,7 @@
 		"package": "npm-run-all -p build:webview build:esbuild check-types lint",
 		"pretest": "npm run compile",
 		"dev": "cd webview-ui && npm run dev",
-		"test": "npm-run-all -p test:*",
+		"test": "npm-run-all test:*",
 		"test:extension": "jest",
 		"test:webview": "cd webview-ui && npm run test",
 		"prepare": "husky",