* Bump main branding to .NET 8.0 Preview2

* Update the flow now that the version changed

* Manually bump emsdk to preview 2

* Update Versions.props

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Co-authored-by: Ncarlossanlop <carlossanlop@users.noreply.github.com>
Co-authored-by: NAlexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: NLarry Ewing <lewing@microsoft.com>