[build] Add Windows arm64 runner

[fhanau]

No description provided.

[fhanau]

This is blocked for now – rules_js uses yq to parse the pnpm lock file, but doesn't set up a arm64 Windows toolchain for it. https://github.com/bazel-contrib/bazel-lib/blob/main/lib/private/yq_toolchain.bzl
yq releases are not available for arm64 Windows atm, so this is a hard blocker for now. https://github.com/mikefarah/yq/releases/tag/v4.45.1

[fhanau]

Managed to patch out the yq issue, but that only revealed several other issues:

• The rules_nodejs bazel toolchain (and possibly more toolchains in rules_js/ts) does not support arm64 Windows.
• clang-cl is present, but compiling fails based on an error about using an LLVM version < 20. This is not the case on the x64 image. Clearly, the image could benefit from better maintenance.
• [windows-11-arm] Enable developer mode (to support creating symlinks as non-admin) actions/partner-runner-images#94

This continues to be blocked unfortunately.