fix(turbopack): Fix `EcmascriptModuleFacadeModule::ident()` (#71338)
### What?
Fix `ident` implementation of `EcmascriptModuleFacadeModule`. Previous code replaces original module part, while the new implementation adds part information as a modifier.
### Why?
Currently, `ident` implementations are not correctly aligned. This makes some modules returned from `references()` disappear from the final bundle.
### How?