Update Helix ubuntu arm32 container (#7410)

* Update Helix ubuntu arm32 container

* Switch to debian-12-helix-arm32v7

* Revert back to ubuntu-24.04-helix-arm32v7

* Update helixQueue to use Ubuntu 22.04 on ARM32

* Add linux-arm baseline for Summarize.txt

Author: ericstj

.vsts-dotnet-ci.yml

@@ -70,7 +70,7 @@ jobs:
     pool:
       name: NetCore-Public
       demands: ImageOverride -equals build.Ubuntu.2204.amd64.open
-    helixQueue: [email protected]/dotnet-buildtools/prereqs:ubuntu-18.04-helix-arm32v7
+    helixQueue: [email protected]/dotnet-buildtools/prereqs:ubuntu-22.04-helix-arm32v7
 
 - template: /build/ci/job-template.yml
   parameters: