feat(report): rank versions by latest benchmark run

[meyer9]

Summary

• rank ClientVersion filter values by the latest completed run timestamp
• preserve lexical ordering for all other report filters
• use deterministic lexical fallback for versions without valid timestamps

Validation

• yarn test filter.test.ts
• yarn build

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1

[meyer9]

requested your review since this is being deprecated for the new UI. I'm using this frontend to test the benchmark runner, so should be safe to merge.