[andyblac]

Summary

Fixes #692

Home Assistant could offer an already-configured Wiser hub as a new integration when mDNS discovery appended a numeric suffix to its name, for example:

• Configured hub: WiserHeatxxxxxx
• Rediscovered name: WiserHeatxxxxxx-4

The suffixed name generated a different unique ID, so the existing config entry was not recognised.

Changes

• Match numerically suffixed discovery names against configured Wiser hubs.
• Reuse the configured hub name and unique ID when a match is found.
• Preserve suffixed names for genuinely unknown hubs.
• Add regression tests covering both cases.
• Update the changelog.

Testing

Added tests confirming that:

• A configured hub rediscovered with a numeric suffix is correctly rejected as already configured.
• An unknown hub with a numeric suffix retains its discovered name.