ENH: modify the start pos of wall for wipe tower[affects BBL machines only]

[Noisyfox]

and modify the overlap of wall and infill for wipe tower jira:none

cherry picked from commit bambulab/BambuStudio@4db196b

Thanks BambuLab!

• Optimize the starting position of the printing wiper tower after material change, the initial print on the wipe tower sometimes had under-extrusion issues, and all layers of wipe tower have the same starting position, increasing the risk of collision. This optimization distributes the initial extrusion over four corners, reducing the accumulation of defects.
• Reducing the rivet length between the wipe tower's outer wall and infill to 0mm minimizes the risk of collision when switching between printing infill and outer walls.

[CristianGTR97]

This is great, I hope this gets merged soon

[SoftFever]

Looks great!
Shall we extend it to WipeTower2 as well?

[Noisyfox]

Looks great! Shall we extend it to WipeTower2 as well?

Good point, I'll try doing that.

[Noisyfox]

Looks great! Shall we extend it to WipeTower2 as well?

I just realized this does not apply to WipeTower2 because wipe tower 2 does not printing the wall first.

[SoftFever]

Looks great! Shall we extend it to WipeTower2 as well?

I just realized this does not apply to WipeTower2 because wipe tower 2 does not printing the wall first.

Ah yes, haha—WipeTower2 prints the wall at the end, so there's no issue to begin with.

[SoftFever]

Thanks