[arm64] Avoid sign-extending TYP_INT register moves - #129864

⚠️ The following pipeline(s) will not be analyzed as has been explicited excluded from analysis

• runtime-coreclr superpmi-diffs
• runtime-coreclr hardware-intrinsics

All checks completed

✅ [runtime]

✅ [dotnet-linker-tests]

✅ [runtime-dev-innerloop]

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