[clang] [clang] Move the diagnostic of unexpected token after module name from phase 4 to phase 7 (PR #187846)

[Erich Keane via cfe-commits]

https://github.com/erichkeane commented:

I don't have a good feel if this is the 'right' solution, but it seems reasonable to me.  Hopefully someone with a better understanding of module parsing comes along.

https://github.com/llvm/llvm-project/pull/187846