These patches are for the trunk/main only and yes, they are actually the latest ones from the MR.
They supersede the old set, so only two files needed. One is from MR 1268 patches SEH on ARM64 (affects multiple files), the other patches code generation related to parameter passing MR 1289 (affects one file).
They are logically separate, so two patches. Currently I have a set of 2,507 tests, primarily taken from the compiler testing framework and other open-source projects - they all pass with the above patches.