PSO2 Shape Studio 1.3.5 hotfix

Fixed

• Some outfits failed to load with "Object reference not set to an instance of
  an object" - the N-Bunny Suit among them, and mods built on outfits like it.

  A vertex set can be shared by several meshes, and the loader splits it so
  each mesh gets its own. It was doing that for every NGS model on the strength
  of the version number, but some are already stored one set per mesh, and
  splitting those wrecks them: meshes vanish and the vertex list gains empty
  entries. The loader now checks whether the sets are actually shared.

  Nothing was wrong with the affected files. Round-tripping one through Blender
  made it load only because the re-export happened to produce a layout the old
  check handled - that workaround is no longer needed.

Update notes

• Nothing else changed since 1.3.4; no cache rebuild is needed.
• This is a self-contained Windows x64 package; a separate .NET installation is
  not required.
• PSO2 game assets and character files are not included.

Validation

• Release tests: 111 passed, 0 failed, 0 skipped.
• Forty outfits sampled across the NGS range all load.
• SHA-256: 45F446376147C50DD34FBBE006D9967E459A0B3ECB17348AFEDDAFE38E7F9F5B

Full changelog: v1.3.4...v1.3.5