[AB#2699](https://dev.azure.com/fluidframework/235294da-091d-4c29-84fc-cdfc3d90890b/_workitems/edit/2699)

If someone loaded the latest version of a file right before loading an
older version of the file, the older version would fetch the latest
version stored in cache.

The cache key of the latest version of a file and an older version of a
file should be different.

Patch back to internal 1.4.x

Original PR: https://github.com/microsoft/FluidFramework/pull/13127