Fix some issues in gcode checker to make it work
normally in following cases.
1 Bridge cmd could pass the checker
2 Some G1 cmd could pass the checker
3 All axis cmd could pass the checker
Signed-off-by: qing.zhang <qing.zhang@bambulab.com>
Change-Id: Ib21b3f8c11a0982c15166c77fb9765f248a5c6aa