fix: compute auxiliary losses when denoising is disabled in D-FINE (#45601)
* fix: compute auxiliary losses when denoising is disabled in D-FINE
* style: fix formatting
* test: add regression test for auxiliary losses when denoising is disabled
* test: fix num_labels config in auxiliary loss regression test
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Co-authored-by: Yoni Gozlan <74535834+yonigozlan@users.noreply.github.com>