hadrian BinaryDist: version ghc in ghciScriptWrapper

This fixes the bindist ghci wrapper script installed by Hadrian, to run ghc versioned.

Otherwise if there exist parallel installs of ghc, the wrong version may be run, eg like this:

$ ghci-9.2.1 
GHCi, version 8.10.5: https://www.haskell.org/ghc/  :? for help