Hide analytics and dev errors in console

[davidfig]

• remove analytics in index.html and rely on ones in analytics.ts (looks like had multiple google analytics attachments)
• don't fetch user profile images when in dev (google doesn't like localhost as a host)
• remove the install React DevTools message

Testing:

• Double check analytics still works

[qa-wolf]

QA Wolf here! As you write new code it's important that your test coverage is keeping up.
Click here to request test coverage for this PR!

[github-actions]

Preview - Build, Deploy & Tests-E2E

✅ Build images
✅ Deploy images - Sep 09, 2025 at 02:00 PM UTC - Preview
⏳ Tests-E2E

🔍 Please check the workflow run for details.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.72%. Comparing base (2168ca6) to head (cb0524a).

Additional details and impacted files

@@           Coverage Diff           @@
##               qa    #3395   +/-   ##
=======================================
  Coverage   89.72%   89.72%           
=======================================
  Files         434      434           
  Lines       89057    89057           
=======================================
  Hits        79906    79906           
  Misses       9151     9151           

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[cole-at-quadratic]

We can remove code for the Google Tag Manager property: GTM-WVC2XPB3

Keep code for GTM-MDFG6DX4