revert: restore xcscheme buildConfiguration to Testflight

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: bfoss765

DashWallet.xcodeproj/xcshareddata/xcschemes/dashwallet.xcscheme

@@ -120,7 +120,7 @@
       buildConfiguration = "Debug">
    </AnalyzeAction>
    <ArchiveAction
-      buildConfiguration = "Release"
+      buildConfiguration = "Testflight"
       revealArchiveInOrganizer = "YES">
    </ArchiveAction>
 </Scheme>