fix: prevent Travel Fix Up injection inside wipe blocks

BrickLayers was storing travel line references during wipe blocks,
then replacing them with Travel Fix Up moves that broke the wipe
sequence. This caused:
1. Missing chunks in Bambu Studio's G-code preview
2. Incomplete nozzle wipe at brick layer transitions (print quality)

One-line fix: added 'and not feature.wiping' check when storing
last_noninternalperimeter_xy_line reference.

Affects Bambu Studio format only — OrcaSlicer format was unaffected.

Author: adele-with-a-b

bricklayers.py

@@ -2183,7 +2183,7 @@ def process_gcode(self, gcode_stream):
                     buffer_lines.append(myline)
 
                 self.last_noninternalperimeter_state = current_state
-                if simulator.moved_in_xy:
+                if simulator.moved_in_xy and not feature.wiping:
                     myline.current = current_state
                     self.last_noninternalperimeter_xy_line = myline