Disable LLVM AOT ARM64 lane (#90413)

Author: directhex

eng/pipelines/extra-platforms/runtime-extra-platforms-other.yml

@@ -324,7 +324,7 @@ jobs:
     runtimeFlavor: mono
     platforms:
       - linux_x64
-      - linux_arm64
+      # - linux_arm64
     variables:
       - name: timeoutPerTestInMinutes
         value: 60