🐛[BUG]: Fix pix2pix activation type

[mnabian]

Version

0.3.0

On which installation method(s) does this occur?

Docker, Pip, Source

Describe the issue

pix2pix activation type is currently set to str. But to support Sym's pix2pix, we need to add support for Activation type or else jit compilation won't work for Sym's pix2pix model.

Minimum reproducible example

No response

Relevant log output

No response

Environment details

No response