[release/7.0] Tweak publishing to avoid clearing ItemsToPush during SB (#43946)
[release/7.0] Tweak publishing to avoid clearing ItemsToPush during SB (#43946)

* Tweak publishing to avoid clearing ItemsToPush during SB

* Missing quote

* Use different property

* Update Publishing.props
aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore,aspnet/AspNetCore