XAI 4.0.55: תמיכה במודלים לפי בקשה ב batch

תקציר מקורי באנגלית<h3>Patch Changes</h3> <ul> <li><a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/vercel/ai/commit/a4ba39433dcdf6129ac8423742cf05af039bd1c1/hovercard" href="https://github.com/vercel/ai/commit/a4ba39433dcdf6129ac8423742cf05af039bd1c1"><tt>a4ba394</tt></a>: feat: support per-request models in batch</li> <li>Updated dependencies [<a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/vercel/ai/commit/a4ba39433dcdf6129ac8423742cf05af039bd1c1/hovercard" href="https://github.com/vercel/ai/commit/a4ba39433dcdf6129ac8423742cf05af039bd1c1"><tt>a4ba394</tt></a>]</li> <li>Updated dependencies [<a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/vercel/ai/commit/45099daf24fd7cd560a0e418