t4 template fix for "assembly can't be resolved" on macos (#3319)
t4 template fix for "assembly can't be resolved" on macos (#3319)

* t4 template fix for "assembly can't be resolved" on macos

* use CodeBase only for netfx

Co-authored-by: Pavel Dudka <c1574b71a62744c8d9652d42b83e2de3c2e98862@similarweb.com>
Co-authored-by: MaceWindu <f6d1168750fdc0a589ef2076a428ba51dd76ee93@users.noreply.github.com>
linq2db/linq2db,LinqToDB4iSeries/linq2db,linq2db/linq2db,LinqToDB4iSeries/linq2db