Track VCs being popped from stack from UIKit #243
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Tapping the back button or interactively popping via gesture can conflict with observation when the view controller being popped to executes a mutation in its
will
- ordidAppear
. While this isn't common in vanilla UIKit, in TCA sending even a no-op action in these lifecycle hooks can lead to immediately re-pushing the view controller that was just popped.This commit does what it can to detect when the back button was pushed or the interactive pop gesture was invoked so that if/when the pop is committed, we can update the path more eagerly, avoiding the re-presentation.