[clang] [CIR][NFC] Share getSuccessorRegions across region-branch ops (PR #220512)

[Henrich Lauko via cfe-commits]

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@@ -4820,7 +4841,7 @@ def CIR_AwaitOp : CIR_RegionBranchOpBase<"await", [
 //===----------------------------------------------------------------------===//
 // CoroBody
 //===----------------------------------------------------------------------===//
-def CIR_CoroBodyOp : CIR_RegionBranchOpBase<"coro.body", [
+def CIR_CoroBodyOp : CIR_EnterAnyRegionBranchOpBase<"coro.body", [
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xlauko wrote:

This no longer exists. 

https://github.com/llvm/llvm-project/pull/220512