FE-856: Fix jsx leaked render + broken entity table filtering in hash-frontend

[alex-e-leon]

🌟 What is the purpose of this PR?

• adds react-x/no-leaked-conditional-rendering to hash-frontend eslint. eslint-plugin-react-x is typeaware so is better then eslint-plugin-react. Also fixes any existing issues found
• also fixes broken entity table filtering

Pre-Merge Checklist 🚀

🚢 Has this modified a publishable library?

This PR:

• does not modify any publishable blocks or libraries, or modifications do not need publishing

📜 Does this require a change to the docs?

The changes in this PR:

• are internal and do not require a docs change

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Project	Deployment	Actions	Updated (UTC)
hash	Ready	Preview, Comment	Jun 11, 2026 5:51pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
hashdotdesign-tokens	Ignored	Preview	Jun 11, 2026 5:51pm
petrinaut	Skipped		Jun 11, 2026 5:51pm

[cursor]

PR Summary

Medium Risk
Archived filtering changes affect entity tables, sidebar counts, and comment-notification deduplication queries; incorrect behavior could hide or show wrong entities until verified.

Overview
hash-frontend adds eslint-plugin-react-x and enables react-x/no-leaked-conditional-rendering, then fixes existing violations: optional UI blocks use condition ? … : null instead of &&, and hasMoreRowsAvailable is coerced with !! so numeric 0 cannot leak into the tree.

Entity query filters are corrected by dropping the extra any clause on the archived system property in build-filter.ts, use-entity-type-entities.tsx, and getCommentNotification in hash-api. Excluding archived rows now relies on notEqual on the top-level archived path only, which fixes broken entity table filtering when the old combined filter was applied.

hash-api comment-notification lookup is aligned with that simpler archived filter (mention notifications already used pageOrNotificationNotArchivedFilter elsewhere).

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