[torchdim] Fix Python 3.11 bytecode decoding in dims (#91290)
Adds a PyInstDecoder object that handles the differences in bytecode
added in 3.11. Basically some instructions have inline caches which
change the size of the instruction, so calculating the next instruction
is slightly different.
fixes #91246
Pull Request resolved: https://github.com/pytorch/pytorch/pull/91290
Approved by: https://github.com/albanD
