multi-repl: Support module renaming for ghc-9.12 onwards

[mpickering]

In ghc-9.12 the -rexported-module flag was extended to add support for module renaming.

Therefore now if a module uses a module renaming, then the -reexported-module flag is passed the renaming.

Fixes #10181

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[mpickering]

Fixed the test being run with a GHC version which doesn't support multi-repl at all.