Support handling ModuleMakeVarsProvider and SingletonMakeVarsProvider in soong only dist

This change allows modules that set dist goals via `MakeVars(...)` to be
properly handled in collecting dist contributions in Soong only build.

Test: compare dist directories with/without change in soong+make build and soong only build
Bug: 394365683
Change-Id: I8a81ab17195b687297961dc6f1ee7b4b97cec24c