Basic shapes were trimmed entirely when they were outside of the canvas,
even if they had a big enough stroke to be partially on the canvas.
This fixes the issue.
Issue: https://github.com/thorvg/thorvg/issues/1785
Previously, a mechanism was introduced to skip antialiasing computations
when shapes are invisible due to their stroking. However, this mechanism
failed to account for the scale factor of the stroke; it only considered
the current stroke width as a threshold.
Consequently, when the stroke width is scaled up to a value smaller than
the threshold, the incorrect antialiasing approach is applied. This results
in the appearance of jagged edges.
The implemented fix rectifies this problem and ensures that the antialiasing
computation correctly takes into consideration both the visibility and the
scale factor of the stroke width.
