[lld] [LLD][COFF] Always locate the IAT at the beginning of the .rdata section and align its size to 4KB on ARM64EC. (PR #107588)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

Thanks! That sounds like good reasons - the less we assume about whether idata is synthesized or sourced from long import libraries, the better.

https://github.com/llvm/llvm-project/pull/107588