torqued: filter out high longitudinal acceleration

For example, when abs(accel) > 1 m/s^2, lateral acceleration achieved may be different than at that speed with an accel of 0 m/s^2. We also use the past speed when calculating the lateral accel, so this is further undefined behavior


Start by locating the torqued lateral-acceleration calculation and trace how longitudinal acceleration and past speed affect it. Confirm the intended handling for cases where abs(accel) exceeds 1 m/s^2, then add coverage showing that those cases are filtered out and verify the resulting lateral-acceleration behavior.

Written by the indexing model from the issue text.