use mapped address when sentinel failover moved pubsub connections

[elimelt]

Description

Closes #3192

Fix small bug in sentinel's new nodeAddressMap option - namely - when sentinel failovers cause pub-sub connections to migrate to a new master, the address mapping should be applied.

This is 100% fixed by the patch (I patched with pnpm and got my client working), but I found it kind of difficult to write a good test that doesn't completely duplicate an existing test (e.g. pubsub - channel - with master change)

I'm also debating whether we want getMasterNode and similar to return the mapped address or not

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Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

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Note

Medium Risk
Changes Sentinel failover reconfiguration logic for pub/sub connections; if the mapping is incorrect or incomplete it could cause pub/sub to reconnect to the wrong/unreachable node during master switches.

Overview
When Sentinel detects a new master, the pub/sub proxy now switches to the mapped node address (via getMappedNode(..., nodeAddressMap)) instead of using the raw Sentinel-reported host/port.

This fixes cases where nodeAddressMap is required (e.g., NAT/container networking) and failover previously moved pub/sub connections to an unmapped address.

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[jit-ci]

🛡️ Jit Security Scan Results

✅ No security findings were detected in this PR

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^{Security scan by Jit}

[nkaradzhov]

@elimelt thanks for the PR, i will try to take a look soon, but im guessing - next week