[CMake] [PR31433] Fix LLDB tool installation
[CMake] [PR31433] Fix LLDB tool installation

This resolves PR 31433.

git-svn-id: 4c4cc70b1ef44ba2b7963015e681894188cea27e@290180 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,apple/swift-lldb,llvm-mirror/lldb,apple/swift-lldb,llvm-mirror/lldb,llvm-mirror/lldb,llvm-mirror/lldb