Certified contract icon for tokens in search and more

[tom2drum]

Description and Related Issue(s)

• Resolves Certified contracts: show checkmark for tokens in search results #2423
• Resolves BENS: expiration date tooltip #2413
• Resolves Transaction State tab long values overlap #2411
• Resolves Metadata: bring default tags to front #2371
• Add remix.ethereum.org to allowed frame-ancestors

Checklist for PR author

• I have tested these changes locally.
• I added tests to cover any new functionality, following this guide
• Whenever I fix a bug, I include a regression test to ensure that the bug does not reappear silently.
• If I have added, changed, renamed, or removed an environment variable
  • I updated the list of environment variables in the documentation
  • I made the necessary changes to the validator script according to the guide
  • I added "ENVs" label to this pull request