FOrcaSlicer 2.3.2-fos.8.5.1

Hotfix over 8.5. Two fixes, no new features.

Per-nozzle line width now applies to painted color patches

On a mixed-nozzle printer, a surface assigned to a nozzle by PAINTING (color patch /
segmentation) now prints at that nozzle's line width, the same as a surface assigned through
the Process feature dropdowns.

In 8.5, painted patches printed at the base region's width regardless of which nozzle laid
them: a 0.2 mm tip could be pushed to a ~0.4 mm line and a 0.8 mm tip held to ~0.4 mm.
Feature-dropdown assignment (outer wall, inner wall, infill, solid infill) was not affected;
only painted regions were. This restores the behavior that shipped before 8.5.

After the fix, a painted 0.2 / 0.4 / 0.6 / 0.8 model lays roughly 0.22 / 0.42 / 0.62 / 0.82
per nozzle. Occasional wider lines on the large nozzle are normal gap infill.

Nozzle 1 keeps its own process preset

Nozzle 1's process preset now follows Nozzle 1's own diameter. Previously it was tied to
whichever nozzle printed the outer wall: assigning the outer wall to a different nozzle - or
painting a model so the outer-wall filament was not nozzle 1 - locked Nozzle 1's preset to that
nozzle's diameter, and it would snap back on reload. Nozzle 1 now stays on its own preset
regardless of the outer-wall assignment; nozzles 2-4 keep their own presets as before.

No change on single-nozzle-size printers

If all nozzles are the same size, nothing changes - output is identical to before. If you do not
paint color patches or reassign the outer wall on a mixed-nozzle machine, these fixes change
nothing for you.