IIIF conformance fixes

[bmquinn]

Description

Improve IIIF Image API conformance and make image transformations more robust across file-backed and streamed inputs:

• Validate that rotation values are within the IIIF-supported range of 0–360 degrees.
• Reject regions whose origins or calculated dimensions fall outside the image bounds.
• Keep scaled regions within the selected source resolution.
• Ensure calculated output dimensions are at least one pixel.
• Avoid unnecessary resize operations when the requested and extracted dimensions match.
• Update Sharp type imports and add test coverage for non-file streams.

Example work in Northwestern University Libraries digital collections with Requested size requires upscaling errors this PR should fix: https://dc.library.northwestern.edu/items/13ea3182-4239-457a-8c2d-a58d6e259b63