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c1064da21b
fixes https://github.com/flutter/flutter/issues/142393 The issue is that if routerdelegate mutate its currentConfiguration outside of Router's workflow, the change will be propagate back to routeinformationprovider at the end of the frame. However if another things trigger router's dependencies change within the same frame. The dependencies will trigger a reparse of the current route which would end up override the currentConfiguration in routerDelegate. This change introduce a transaction system that each operation will be add to the end of the transaction future so everything will be execute inorder