fix : removed console.log exposing Firebase API key

[tmdeveloper007]

Summary of What Has Been Done

Removed the top-level console.log statement from firebase.js that was outputting the Firebase API key to the browser developer console.

Changes Made

1. frontend/src/utils/firebase.js line 4: Removed console.log("Firebase API Key:", import.meta.env.VITE_FIREBASE_API_KEY);

Impact it Made

• Prevents sensitive configuration values from leaking into browser developer console logs.
• Follows security best practices for API key handling in frontend applications.
• Firebase authentication continues to work correctly without this debug log.

Closes #2039

Note: Please assign this PR to the tmdeveloper007 account.