Project: #15190

This adds some more scan tracks and removes the Contact Support button track since we already have one.

To test:

1. Launch the app
2. Tap on My Site
3. Tap on a site with Jetpack Scan enabled
4. Tap on Scan
5. Tap on History
6. Tap on a threat
7. You should see

🔵 Tracked: jetpack_scan_threat_list_item_tapped <section: history, threat_signature: SIGNATURE>

8. Tap back
9. Tap on 'Fix All'
10. Tap on 'Fix all threats' button
11. You should see

🔵 Tracked: jetpack_scan_allthreats_fix_tapped <threats_fixed: NUMBER>

PR submission checklist:

• I have considered adding unit tests where possible.
• I have considered adding accessibility improvements for my changes.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.