Enable PVP flow for SBRP and sourcelink (#15437)

Co-authored-by: Michael Simons <[email protected]>

Author: mmitche

src/SourceBuild/content/repo-projects/source-build-reference-packages.proj

@@ -12,6 +12,8 @@
 
     <!-- SBRP builds before Arcade so it also needs the bootstrap Arcade version -->
     <UseBootstrapArcade>true</UseBootstrapArcade>
+
+    <PackageVersionPropsFlowType>DependenciesOnly</PackageVersionPropsFlowType>
   </PropertyGroup>
 
   <Target Name="AddLocalNuGetPackageCacheDirectory" BeforeTargets="Build">

src/SourceBuild/content/repo-projects/sourcelink.proj

@@ -8,6 +8,8 @@
 
     <!-- SourceLink builds before Arcade so it also needs the bootstrap Arcade version -->
     <UseBootstrapArcade>true</UseBootstrapArcade>
+
+    <PackageVersionPropsFlowType>DependenciesOnly</PackageVersionPropsFlowType>
   </PropertyGroup>
 
   <ItemGroup>