Fix Chroma attention padding order and update docs to use `lodestones/Chroma1-HD` (#12508)
* [Fix] Move attention mask padding after T5 embedding
* [Fix] Move attention mask padding after T5 embedding
* Clean up whitespace in pipeline_chroma.py
Removed unnecessary blank lines for cleaner code.
* Fix
* Fix
* Update model to final Chroma1-HD checkpoint
* Update to Chroma1-HD
* Update model to Chroma1-HD
* Update model to Chroma1-HD
* Update Chroma model links to Chroma1-HD
* Add comment about padding/masking
* Fix checkpoint/repo references
* Apply style fixes
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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>