Branding for Preview 3

I made the preview 2 branch off main as today was the deadline. Please see #18325 for an example of how this has been done previously.

Author: nagilson

eng/Versions.props

@@ -23,7 +23,7 @@
     <PreReleaseVersionLabel Condition="'$(StabilizePackageVersion)' != 'true'">preview</PreReleaseVersionLabel>
     <PreReleaseVersionLabel Condition="'$(StabilizePackageVersion)' == 'true' and '$(VersionFeature)' == '00'">rtm</PreReleaseVersionLabel>
     <PreReleaseVersionLabel Condition="'$(StabilizePackageVersion)' == 'true' and '$(VersionFeature)' != '00'">servicing</PreReleaseVersionLabel>
-    <PreReleaseVersionIteration Condition="'$(StabilizePackageVersion)' != 'true'">2</PreReleaseVersionIteration>
+    <PreReleaseVersionIteration Condition="'$(StabilizePackageVersion)' != 'true'">3</PreReleaseVersionIteration>
   </PropertyGroup>
   <PropertyGroup>
     <VersionFeature21>30</VersionFeature21>