[lld] [lld][COFF] Merge .00cfg section into .rdata. (PR #75207)

[Jacek Caban via llvm-commits]

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@@ -1,4 +1,4 @@
-        .section .rdata,"dr"
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cjacek wrote:

I think we don't lose coverage. We still have other tests that declare _load_config_used in .rdata, so we should be protected from somehow accidentally depending on it being in .00cfg. I made the change to Inputs/ to widen coverage of merging and making shared load config more similar to real-world case feels right.

Thanks for reviews!

https://github.com/llvm/llvm-project/pull/75207