`-h` needs to be removed before 9.4 according to error
RtsFlags.c on both
ghc-9.4 you will find the following line:
errorBelch("-h is deprecated and will be removed in the next release (9.4),\nuse -hT instead.");
We should ensure we don't forget to remove this option before 9.4 is released.
Related to #19031 (closed)
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