Main added Brush Tip Shape Angle/Roundness tests and doc rows at the same places as
this PR's Scatter header tests and rows; both sides are kept, and the doc status
lines name both changes.
Co-Authored-By: augrclk <augrclk@users.noreply.github.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>