(Post-Launch Suggestion) Add a No-Glue Hypotenuse Wedge Block

This block is a no-glue wedge, but the no-glue part is on the hypotenuse instead of the leg.
This block would be helpful because I'm trying to build a Rubik's cube, but I need this block because there are sloped parts that need to slide against each other without connecting.

Start with the issue description and attached image to understand the requested no-glue hypotenuse wedge block. Done means the project includes a wedge block whose hypotenuse, rather than leg, provides the no-glue sliding behavior needed for the described Rubik's cube build. The issue names no files, tests, or entry points, so the implementation location must be discovered in the repository.

Written by the indexing model from the issue text.