[SYCL] Cherry-pick of external semaphore fixes#20196

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steffenlarsen merged 2 commits intointel:sycl-rel-6_3from

steffenlarsen:fix_bindless_img_sem

Sep 29, 2025

Commits on Sep 25, 2025

[SYCL][BindlessImages] Fix external semaphore dependencies and return events (#20040)
steffenlarsen
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[SYCL][BindlessImages] Fix storing result events for semaphores (#20080)
steffenlarsen
committed