Building `ghc-internal` in stage1 and bumping bootstrap compiler

[hasufell]

It seems upstream GHC now requires ghc-internals to be built in stage 1:

• https://gitlab.haskell.org/ghc/ghc/-/commit/152c335a7bcd2dc735ec858636a3f73e91fbba4d
• https://gitlab.haskell.org/ghc/ghc/-/commit/2a8881475b05d2c89ed587e9b2cd80e4d470ebf7

And the minimum GHC version now is 9.10.x.

Our own ghc-internal configure deviates and has the following code:

ghc/libraries/ghc-internal/configure.ac

Lines 418 to 432 in e97506d

	AC_MSG_CHECKING([for GHC/Internal/Prim.hs])
	if mkdir -p GHC/Internal && $GHC --print-prim-module > GHC/Internal/Prim.hs; then
	AC_MSG_RESULT([created])
	else
	AC_MSG_RESULT([failed to create])
	AC_MSG_ERROR([Failed to run $GHC --print-prim-module > GHC/Internal/Prim.hs])
	fi
	AC_MSG_CHECKING([for GHC/Internal/PrimopWrappers.hs])
	if mkdir -p GHC/Internal && $GHC --print-prim-wrappers-module > GHC/Internal/PrimopWrappers.hs; then
	AC_MSG_RESULT([created])
	else
	AC_MSG_RESULT([failed to create])
	AC_MSG_ERROR([Failed to run $GHC --print-prim-wrappers-module > GHC/Internal/PrimopWrappers.hs])
	fi

--print-prim-module and --print-prim-wrappers-module only exist in our stable-haskell GHC. That means we can't really build ghc-internal in stage 1 with upstream 9.10.