Merge pull request #7053 from keveleigh/cherrypick-261ef0c2732b2f75869c3a368281444b683df12e

Cherrypick PR #7039 from wiwei/fastervalidation to stabilization

Author: keveleigh

pipelines/pr.yaml

@@ -18,10 +18,16 @@ jobs:
   - template: templates/common.yml
     parameters:
       # For mrtk_pr builds, don't build all flavors to reduce the amount of time
-      # taken for each validation run. Note that this flavor is still checked in
-      # the ongoing rolling CI build. This build in particular is highly correlated
-      # the .NET x86 build and ARM IL2CPP build.
+      # taken for each validation run. With this configuration, only the Standalone
+      # configuration is built.
+      # Note that all of the flavors are still built during the rolling CI.
+      # If there are failures in rolling CI in any of these tasks, we should re-enable
+      # the specific flavors below that are experiencing failures in CI (for example,
+      # if we're actively working on features that have a lot of churn on underlying
+      # WMR APIs, buildUWPArm would be a good candidate to re-enable)
       buildUWPX86: false
+      buildUWPArm: false
+      buildUWPDotNet: false
       # For mrtk_pr builds, validation scripts (code and docs) should be scoped to only
       # the set of changed files, so that we can save some time. There's no need to
       # check unchanged files for code style/doc style violations.