Log VQ remapping configuration through the model logger

[wunianze666-netizen]

Summary

• route VectorQuantizer remap configuration output through the model logger instead of writing directly to stdout
• add a regression test that captures the remap message when remapping is enabled

Why

This message is emitted from library/model initialization code. Sending it to stdout makes it harder for downstream users to manage output, while the logger keeps the signal available without forcing terminal noise.

Validation

• python -m pytest tests/models/autoencoders/test_models_vq.py -k test_vector_quantizer_logs_remap_configuration -q
• ruff check src/diffusers/models/autoencoders/vae.py tests/models/autoencoders/test_models_vq.py
• ruff format --check src/diffusers/models/autoencoders/vae.py tests/models/autoencoders/test_models_vq.py
• python -m py_compile src/diffusers/models/autoencoders/vae.py tests/models/autoencoders/test_models_vq.py

Issue Linkage

This is a small logging cleanup and is not tied to an existing tracked issue.

[github-actions]

Hi @wunianze666-netizen, thanks for the PR! It does not appear to link an issue it fixes. If this PR addresses an existing issue, please add a closing keyword (e.g. Fixes #1234) to the PR description so the issue is linked. See the contribution guide for more details. If this PR intentionally does not fix a tracked issue, a maintainer can add the no-issue-needed label to silence this reminder.

[wunianze666-netizen]

Closing this one-off PR in favor of the pattern-level coordination in #14479. I will wait for maintainer confirmation there, consolidate the approved scope, run the current self-review workflow, and include exact test results before opening a replacement.