[v0.35.3] Fix `image-to-image` target size parameter mapping & tiny agents allow tools list bug

This release includes two bug fixes:

• [Inference] Fix target size mapping for fal-ai's image-to-image in #3399 by @hanouticelina flagged by @iam-tsr
• [Tiny-Agents] Use all tools unless allowed_tools is set explicitly in #3397 by @Mithil467

Full Changelog: v0.35.2...v0.35.3