[renningg]

Summary

The FLUX.2 VAE starter entry describes a 16-channel FLUX.1 architecture. It now identifies the 32-channel AutoencoderKLFlux2 that the FLUX.2 loader uses.

Related Issues / Discussions

Addresses item 5 in #9619.

QA Instructions

• In Models → Starter Models, find FLUX.2 VAE. Its description should say 32-channel AutoencoderKLFlux2.
• Verified the serialized starter-model response with an empty installed-model catalog. Scoped Ruff lint and format checks passed.

Review

The change updates the starter description. The download source and loader behavior are unchanged.

Checklist

• The PR has a short but descriptive title, suitable for a changelog
• Meaningful regression coverage added / updated where needed; obsolete tests/code removed
• Persisted-state and API changes include required migrations / compatibility validation
• Relevant performance/efficiency opportunities considered; material claims have evidence
• Material review findings resolved and relevant checks rerun
• Documentation added / updated (if applicable)
• Updated What's New copy (if doing a release after this PR)

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