[WIP] Fix ClangCL ARM64 cross-compilation

[StefanStojanovic]

This PR is a WIP for fixing the ClangCL cross-compilation to ARM64. It consists of 2 dependency updates that should be done upstream and 1 change in Node.js itself to make everything work:

A fix in ICU a6932ad - To increase the chances of this landing upstream, the change is done by adding an option for this use case so it doesn't break any previously experienced behavior. After this is reviewed and discussed, I plan to open a PR in the ICU and try to land it there.

A fix in FP16 f8b52b5 - This already landed in the base repo. Since that project is a dependency of the V8, a CL to update it in V8 will be opened.

Node.js changes 176f1c6 - Once everything else is done, the change in the main repo is a simple one.

NOTE: Depending on the affected upstream projects and their release cycles and updates, we may need to use the patches on our side for some time.

cc @targos @lemire @nodejs/i18n-api

Refs: #52809

[srl295]

@StefanStojanovic

After this is reviewed and discussed, I plan to open a PR in the ICU and try to land it there.

hi! Please file a ticket (or see ICU-21633 and linked tickets) and PR to ICU first. I'm -1 on innovating here, it's just going to get dropped the next time through. This PR modifies a generated file, which is ignored under some contexts.

Depending on the affected upstream projects and their release cycles and updates, we may need to use the patches on our side for some time

I sent you a note on Slack on that topic. If there does need to be a patch, I'd rather it was a backport of a PR actually landed upstream.

[StefanStojanovic]

Closing this one, since all of the changes from this PR already landed in the intended way.