[dynamo] `VariableTracker.call_method` requires a name (#88311)
Summary: as title
Test Plan: Before: N2743445, After: N2748186. Note there's a new error, but at least we got past the easy one.
Differential Revision: D40938415
Pull Request resolved: https://github.com/pytorch/pytorch/pull/88311
Approved by: https://github.com/brad-mengchi
