Fix: Right hand reset_motors.py integer underflow issue

[kywch]

Thank you for making the RUKA hand!

When using reset_motors.py with the right hand, the hand's self.tensioned_pos was set to 0. It caused integer underflow, resulting in erratic motor positions with large values like 4294967295.

curr_pos: [101, 100, 100, 101, 101, 98, 99, 98, 101, 101, 101], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 1, 0, 3, 3, 0, 1, 2, 1, 2, 2], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 2, 1, 0, 1, 4294967295, 1, 2, 2], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 1, 1, 0, 1, 4294967273, 1, 4294967295, 4294967295], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 1, 1, 0, 1, 4294967250, 0, 4294967258, 4294967286], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 1, 0, 0, 1, 4294967261, 1, 44, 21], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 1, 4294967295, 0, 1, 4294967265, 1, 41, 28], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 1, 4294967170, 0, 1, 4294967263, 1, 13, 12], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 1, 4294967174, 0, 1, 4294967292, 1, 5, 6], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 1, 4294967191, 0, 1, 4294967263, 1, 3, 3], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
curr_pos: [0, 0, 0, 1, 4294967201, 0, 1, 4294967262, 1, 2, 3], des_pos: [0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0.]
...

Adding 100 to self.tensioned_pos fixed it and produced the output like:

curr_pos: [100, 100, 100, 101, 98, 101, 101, 100, 101, 101, 101], des_pos: [100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.]
curr_pos: [100, 100, 100, 101, 99, 101, 101, 100, 101, 101, 101], des_pos: [100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.]
curr_pos: [100, 100, 100, 101, 99, 101, 101, 100, 101, 101, 101], des_pos: [100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.]
curr_pos: [100, 100, 100, 101, 100, 101, 101, 100, 101, 101, 101], des_pos: [100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.]
curr_pos: [100, 100, 100, 101, 101, 101, 101, 100, 101, 101, 101], des_pos: [100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.]
curr_pos: [100, 100, 100, 101, 101, 101, 101, 100, 101, 101, 101], des_pos: [100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.]
curr_pos: [100, 100, 100, 101, 101, 101, 101, 100, 101, 101, 101], des_pos: [100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.]
curr_pos: [100, 100, 100, 101, 101, 101, 101, 100, 101, 101, 101], des_pos: [100. 100. 100. 100. 100. 100. 100. 100. 100. 100. 100.]
...