Fix events summary endpoint for DST

[hawkeye217]

Proposed change

As a follow-up to the changes in #20770 and #20784, this PR makes the events summary API endpoints DST-aware.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code
• Documentation Update

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:

Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• UI changes including text have used i18n keys and have been added to the en locale.
• The code has been formatted using Ruff (ruff format frigate)

[netlify]

✅ Deploy Preview for frigate-docs ready!

Name	Link
🔨 Latest commit	5586e83
🔍 Latest deploy log	https://app.netlify.com/projects/frigate-docs/deploys/69094bcfaaf75500081c2e0e
😎 Deploy Preview	https://deploy-preview-20786--frigate-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.