Fix capacity overflow in offset path node

[ashishmohapatra240]

Fixes #3288

Prevents infinite recursion in fit_to_bezpath by:

• Relaxing accuracy tolerance from 1e-3 to 1e-2
• Filtering out degenerate cubic beziers
• Capping max segments at 10k to prevent capacity overflow

Graphite.mp4

[TrueDoctor]

I don't love lowering of the accuracy, is that a necessary change?

[ashishmohapatra240]

i initially relaxed the accuracy from 1e-3 to 1e-2 thinking it would reduce recursion depth in fit_to_bezpath, reverted to 1e-3.

[ashishmohapatra240]

Hey, @TrueDoctor Let me know if this works!