Several Artillery and Flashforge machine profiles set the first-layer nozzle temperature with M104 (set, no wait) immediately before the purge/prime line. The purge then runs before the nozzle reaches temperature, so filament is extruded through a nozzle that is not yet hot enough to melt it. Changed M104 to M109 so the printer waits for the target temperature before purging.
Affected profiles:
- Artillery Sidewinder X3 Plus / X3 Pro / X4 Plus / X4 Pro (0.4 nozzle)
- Flashforge AD5X (0.25/0.4/0.6/0.8)
- Flashforge Adventurer 5M / 5M Pro (0.25/0.8 overrides + shared fdm_adventurer5m_common, which also covers the 0.4/0.6 variants via inheritance)
Refs #4337
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