fix: Prevent Travel Fix Up injection inside wipe blocks

[adele-with-a-b]

Bambu Studio Wipe Fix

Fixes missing chunks in Bambu Studio's G-code preview and improves print quality at brick layer transitions.

Problem

BrickLayers stores a reference to the last non-internal-perimeter travel line (last_noninternalperimeter_xy_line) and later replaces it with a Travel Fix Up move that includes a Z change. When this travel line happens to be inside a WIPE_START/WIPE_END block, the replacement breaks the wipe sequence.

This causes:

1. Missing chunks in Bambu Studio's G-code preview — the renderer can't parse the malformed wipe sequence
2. Incomplete nozzle wipe at brick layer transitions — the wipe path is interrupted, potentially causing strings or blobs

Fix

One-line change: added and not feature.wiping check when storing the travel line reference. This prevents BrickLayers from modifying travel moves that are part of a wipe sequence.

# Before:
if simulator.moved_in_xy:

# After:
if simulator.moved_in_xy and not feature.wiping:

Impact

• Bambu Studio format: Fixes missing chunks in preview and print quality at transitions
• OrcaSlicer format: No change (OrcaSlicer's wipe handling doesn't produce the same travel pattern inside wipe blocks)
• Print quality: The wipe sequence now completes correctly, ensuring proper nozzle cleaning before layer transitions

Slicer Preview

A patched BambuStudio fork is available that re-parses G-code after post-processing scripts run, showing the BrickLayers toolpath directly in the preview without manual re-import. This wipe fix is required for the preview to render correctly.