Create Fly: Copycats+ Port

Changes:
- Added support for full Minecraft/CreateFly 26.2 while keeping a separate 26.1.2 build.
- Improved connected texture handling for copycat blocks using Create framed glass and other connected-texture materials.
- Fixed copycat slabs so they only connect where their actual slab face touches a matching surface.
- Fixed same-material double copycat slabs so they render/connect more like a full block.
- Prevented slabs from incorrectly connecting to full blocks from the wrong side or empty half.
- Prevented edge, corner, and vertical slice copycat pieces from connecting textures until the shape fills a full block.
- Improved internal face hiding for copycat blocks, slabs, bytes, and byte panels.
- Fixed copycat pipe copied-material textures so pipes do not visually connect to unrelated neighboring blocks.
- Kept normal pipe-to-pipe behavior unchanged.
- Improved copied-material lighting and shadow behavior for animated copycat doors.
- Restored Copycats+ item summaries and creative tab grouping.
- Debug diagnostics are disabled for release builds by default, so normal gameplay should not spam the log.