Skip template tests on arm64 for now

Author: HaoK

src/ProjectTemplates/test/ProjectTemplates.Tests.csproj

@@ -10,6 +10,7 @@
 
     <RunTemplateTests Condition="'$(RunTemplateTests)' == ''" >true</RunTemplateTests>
     <SkipTests Condition="'$(RunTemplateTests)' != 'true'">true</SkipTests>
+    <BuildHelixPayload Condition="'$(RunTemplateTests)' != 'true'">false</BuildHelixPayload>
 
     <!-- Some tests still do not work on Helix, so continue running these on azdo for now-->
     <SkipTests Condition="'$(RunTemplateTests)' == 'true'">false</SkipTests>