[llvm] [AArch64][BOLT] Ensure tentative code layout for cold BBs runs. (PR #96609)

[Paschalis Mpeis via llvm-commits]

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@@ -382,6 +385,11 @@ uint64_t LongJmpPass::tentativeLayoutRelocMode(
     DotAddress += Func->estimateConstantIslandSize();
     ++CurrentIndex;
   }
+  if (!ColdLayoutDone) {
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paschalis-mpeis wrote:

Thanks @yota9 .

BTW, I've just released a reproducer on the bug I describe earlier on this PR (see [point (2)](https://github.com/llvm/llvm-project/pull/96609#issuecomment-2188867516) in my initial comment)

**The issue is:**
- #99848

A possible lead could be the FixRelaxations pass. Any feedback would be appreciated (cc: @yota9 @rafaelauler  @samolisov ).

https://github.com/llvm/llvm-project/pull/96609