[cond] make sure subgraphs in cond are decomposed according to current decomp table (#120366)
Fixes https://github.com/pytorch/pytorch/issues/120160. The issue is because previously cond doesn't pass in the global decomposition table in ProxyMode. This PR adds the current_decomposition_table to the recursive make_fx call.
Test Plan:
see added tests.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/120366
Approved by: https://github.com/aakhundov, https://github.com/jansel
