[llvm] Include <chrono> for system_clock and now

[LilyWangLL]

Due to there are new changes merged by microsoft/STL#5105, so port llvm need to include <chrono> by patching to fix the following error for feature llvm[lldb]:

D:\b\llvm\src\org-18.1.6-e754cb1d0b.clean\lldb\tools\lldb-dap\ProgressEvent.h(79): error C2039: 'system_clock': is not a member of 'std::chrono'
D:\b\llvm\src\org-18.1.6-e754cb1d0b.clean\lldb\tools\lldb-dap\ProgressEvent.cpp(134): error C3083: 'system_clock': the symbol to the left of a '::' must be a type
D:\b\llvm\src\org-18.1.6-e754cb1d0b.clean\lldb\tools\lldb-dap\ProgressEvent.cpp(134): error C2039: 'now': is not a member of 'std::chrono'

I have submitted relevant PRs upstream llvm/llvm-project#118059.

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[BillyONeal]

Thanks for the fix and submitting upstream!