docs(solac): Document manual inverter select

[kdehairy]

linked to this PR home-assistant/core#176275

Proposed change

In Solax integration, the current auto-discovery behavior often results in multiple "valid" inverters, and it just picks one, effectively, at random.

This patch allows the user to hand pick the model. If they did so, the auto-discovery is disabled and the hand picked model is chosen.

If left empty, the current auto-discovery behavior is picked up. making this backward compatible (UX wise).

Type of change

• Spelling, grammar or other readability improvements (current branch).
• Adjusted missing or incorrect information in the current documentation (current branch).
• Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logos and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: feat(solax-integration): Persist discovery result and lets the user be the tie breaker instead of asyncio scheduler core#176275
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue: fixes #

Checklist

• This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• The documentation follows the Home Assistant documentation standards.

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Pull request overview

This PR updates the Home Assistant website documentation for the SolaX Power integration to describe a new setup option that lets you manually select an inverter model, as introduced in the linked core PR (home-assistant/core#176275).

Changes:

• Added a new documentation section describing manual inverter model selection during the config flow.
• Explained when to use manual selection versus leaving the field empty to keep automatic detection.

[kdehairy]

I failed to find a "reopen" action on this PR. It is still needed.

The "Bot" closed it by mistake because it was linked to "another" PR that has been closed. My codebase PR linked here is still open.

Can you please help me reopen it?

[kdehairy]

opened another one #46830 same content