✨ Apply negative boost for job postings with the same job ID after skip

A user reported that they frequently see the same job posting, even after applying or marking it as "Already applied."

Proposed solution:

• When a candidate skips a job posting, apply a negative boost to other job postings with the same job ID in Elasticsearch results.
• This should reduce the likelihood of showing duplicates for roles the candidate has already expressed disinterest in.

Goal: Improve job feed variety and reduce frustration from seeing the same postings repeatedly.