Fixed the MVD range to be compatible with entropy coding limit.
In VTM-6.0, the range of MVD is [-2^17, 2^17-1], inclusive. When a MVD value is 2^17, the exponential golomb coding of abs(MVD) - 2 will exceed the entropy coding limit (32 bits).
In VTM-6.0, the range of MVD is [-2^17, 2^17-1], inclusive. When a MVD value is 2^17, the exponential golomb coding of abs(MVD) - 2 will exceed the entropy coding limit (32 bits).