fix: scope thread options hover state

[officialasishkumar]

Pull Request Type

• ✨ feat (New feature)
• 🐛 fix (Bug fix)
• ♻️ refactor (Code refactoring without changing behavior)
• 💄 style (UI style changes)
• 🔨 chore (Build, CI, maintenance)
• 📝 docs (Documentation updates)

Relevant Issues

resolves #4994

Description

Scopes the thread options hover state to the individual thread row. The active workspace wrapper also uses Tailwind's generic group class, so the nested thread option button was responding to the workspace hover state and revealing the three-dot menu for every thread in that workspace.

This uses a named Tailwind group for each thread row and keeps the existing mobile-visible, desktop-hover behavior. The option button also appears while focus remains within the row.

Visuals (if applicable)

N/A

Additional Information

Validated that the production CSS build emits the named group/thread hover and focus-within rules.

Developer Validations

• I ran yarn lint from the root of the repo & committed changes
• Relevant documentation has been updated (if applicable)
• I have tested my code functionality
• Docker build succeeds locally

Validation performed:

• YARN_CACHE_FOLDER=.yarn-cache yarn install --frozen-lockfile --ignore-scripts in frontend
• yarn lint:check in frontend
• yarn build in frontend
• git diff --check

[shatfield4]

LGTM, no longer shows the 3 dot menu for all threads, just the currently selected thread.