[Fabric] Nesting of components within Text should be supported, but isn't

[chrisglein]

seems like even on fabric, i still get this message :(

Originally posted by @SupertigerDev in #12944 (reply in thread)

On Paper we had this: #6315
With Fabric the restrictions we had shouldn't be the same and this should be implemented, but reports are that it does not work. We probably don't have test coverage for this, because it didn't work on Paper, but we should add coverage.