Fix init the laser shot time offset for pandar40p

[Osborn28]

1. There are two index 9 in laser40Offset_ and without index 7.
2. The value of laser40Offset_[21] was initialized as 31.7447, and I checked the latest offical manual, is 31.74, and all values except it are two-digit floating point precision. So, 31.7447 and 31.74, which one is right, even though they're very similar.