[llvm] [CodeGen] Introduce `MachineDomTreeUpdater` (PR #95369)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `polly-x86_64-linux-shared-plugin` running on `polly-x86_64-gce2` while building `llvm` at step 5 "build".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/118/builds/287

Here is the relevant piece of the build log for the reference:
```
Step 5 (build) failure: 'ninja' (failure)
...
[556/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveVariables.cpp.o
[557/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LocalStackSlotAllocation.cpp.o
[558/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LowLevelTypeUtils.cpp.o
[559/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LowerEmuTLS.cpp.o
[560/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LoopTraversal.cpp.o
[561/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LLVMTargetMachine.cpp.o
[562/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockFrequencyInfo.cpp.o
[563/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBranchProbabilityInfo.cpp.o
[564/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBasicBlock.cpp.o
[565/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o
FAILED: lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o 
ccache /usr/bin/c++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.obj/lib/CodeGen -I/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/lib/CodeGen -I/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.obj/include -I/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -fPIC  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -MD -MT lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o -MF lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o.d -o lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineBlockPlacement.cpp.o -c /home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/lib/CodeGen/MachineBlockPlacement.cpp
In file included from /home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/lib/CodeGen/MachineBlockPlacement.cpp:44:
/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/include/llvm/CodeGen/MachinePostDominators.h:53:3: error: ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’ cannot be overloaded with ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’
   53 |   MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |   ^~~~~~~~~~~~~~~~~~~~~~~~
/home/worker/buildbot-workers/polly-x86_64-gce2/rundir/llvm.src/llvm/include/llvm/CodeGen/MachinePostDominators.h:51:12: note: previous declaration ‘llvm::MachinePostDominatorTree::MachinePostDominatorTree(llvm::MachineFunction&)’
   51 |   explicit MachinePostDominatorTree(MachineFunction &MF) { recalculate(MF); }
      |            ^~~~~~~~~~~~~~~~~~~~~~~~
[566/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineCFGPrinter.cpp.o
[567/4126] Building CXX object lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineCombiner.cpp.o
ninja: build stopped: subcommand failed.

```

https://github.com/llvm/llvm-project/pull/95369