[dynamo] Fix convolution meta kernel when input channel is 0 (#120944)
Addresses https://github.com/pytorch/pytorch/issues/118797
Adding in special channel handling logic from eager (set output channels to 0 when input channels are 0):
https://github.com/pytorch/pytorch/blob/67d3e4f2a298f89cbe3b5ecc304bc45011a6ce09/aten/src/ATen/native/Convolution.cpp#L1400-L1403
Pull Request resolved: https://github.com/pytorch/pytorch/pull/120944
Approved by: https://github.com/zou3519
