Some recent changes with lyon's API could cause Ruffle to draw extra
strokes when it sees two Move commands in a row -- an extra zero-length
stroke would appear. Let's merge adjacent Move commands in the
tessellator to avoid this issue.
(TODO: Add an example to visual_tests).
lyon would emit a small line segment if a stroke path had
consective MoveTo commands. For the lyon backends, filter out
consecutive MoveTos and only emit the final MoveTo command.
This fixes a small dot appearing in text fields using underlines.
Mike Welsh