Fabric versions of RNW contain both Fabric and Paper, and thus have a larger binary size

React Native approximate binary sizes reference (x64 Release Microsoft.ReactNative.dll):

| Paper Size | Fabric Size |
| --- | --- |
| ~4 MB | ~8 MB |

Currently Fabric is the sum of Paper and Fabric, but both are not supported at the same time. We should trim Paper out of the Fabric builds to reduce binary size.