fix(cache): make clear() redis cluster compatible

[solracsf]

Summary

clear() now uses SCAN + UNLINK instead of KEYS + DEL. Added a cluster-aware branch: iterates each master via _masters() and unlinks keys one at a time so every command stays within a single hash slot, so clear() now actually works as expected on a Redis Cluster.

Aditionnally, LoggerWrapperCache::ncad() now correctly delegates to ncad().

Note: The @psalm-suppress NullArgument, PossiblyNullArgument on the SCAN calls is required because the phpredis stub types the cursor as int though it must start as null.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)
• Labels added where applicable (ex: bug/enhancement, 3. to review, feature component)
• Milestone added for target branch/version (ex: 32.x for stable32)

AI (if applicable)

• The content of this PR was partly or fully generated using AI