Test `linker_unload` causes assertion failure in runtime linker on GHC 9.4 branch

The linker_unload test results in an assertion failure on the 9.4 branch.

linker_unload: internal error: ASSERTION FAILED: file rts/linker/elf_reloc_aarch64.c, line 99
    (GHC version 9.4.8 for aarch64_unknown_linux)

I think this was introduced by the backport for !11254 (closed)

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