[llvm] [CodeGen] Port `SjLjEHPrepare` to new pass manager (PR #75023)

[Matt Arsenault via llvm-commits]

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@@ -339,8 +339,7 @@ static bool shouldPinPassToLegacyPM(StringRef Pass) {
       "nvptx-",  "mips-",  "lanai-", "hexagon-", "bpf-",    "avr-",
       "thumb2-", "arm-",   "si-",    "gcn-",     "amdgpu-", "aarch64-",
       "amdgcn-", "polly-", "riscv-", "dxil-"};
-  // TODO: remove "ehprepare"
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arsenm wrote:

I mean the todo would now move to remove "-eh-prepare"?

https://github.com/llvm/llvm-project/pull/75023