Add JPEG 2000 transfer-syntax support to the Sonador Viewer

Add support for JPEG 2000 (and JPEG 2000 lossless) transfer syntaxes in the Sonador Viewer so that studies stored with J2K compression render correctly.

Provenance (re-scoped 2026-07-10 as part of the SN MS1 milestone close-out): originates in the December 2023 planning issue oak-tree/medical-imaging/imaging-development-env#58, parking-lot item "implement support for jpeg 2000 compression" (deferred post-November 2023). No implementation issue was ever created; no existing issue matching JPEG 2000 was found in oak-tree/medical-imaging/ohif-viewers as of 2026-07-10.

Scoping notes:

• Confirm which transfer syntaxes are currently decodable in the viewer build and which fail (JPEG 2000 lossy 1.2.840.10008.1.2.4.91, lossless .90; consider HTJ2K as the modern successor).
• Determine whether the gap is decoder availability (codec/WASM bundle) or configuration, and whether server-side transcoding in Orthanc is the preferable path for unsupported syntaxes.

Not yet assigned to a milestone — created so the outstanding December 2023 scope has a trackable home and can be prioritized (or explicitly declined) during the next planning pass. Given its age, this item is a candidate for "decline as no longer relevant" if J2K studies are not encountered in practice.