fix: defer reentrant BlueprintView updates

[robmaceachern]

Summary

• defer BlueprintView hierarchy invalidations that occur while Blueprint is already updating its view tree
• coalesce the deferred retry so UIKit safe-area/window callbacks cannot synchronously re-enter updateViewHierarchyIfNeeded()
• add a regression test that mutates additionalSafeAreaInsets during backing-view attach/layout, matching the production crash shape
• add the missing BlueprintUICommonControls dependency for the package test target so the focused package test builds

Context

This came from an ios-register 7.10 crash investigation where BlueprintView.safeAreaInsetsDidChange() re-entered BlueprintView.updateViewHierarchyIfNeeded() during a Market keyboard/header layout update. A MarketUI harness reproduced the exact precondition crash locally before this Blueprint patch; with this patch copied into Market's Blueprint checkout, the same harness passes.

Testing

• xcodebuild test -scheme BlueprintUI-Package -destination 'platform=iOS Simulator,name=iPhone 17 Pro,OS=26.5' -only-testing:BlueprintUITests/BlueprintViewTests/test_safeAreaChangeDuringUpdateDefersNestedUpdate -quiet
• Market validation with this Blueprint source copied into Market's local checkout: xcodebuild test -workspace ios/MarketDevelopment.xcworkspace -scheme UnitTests -destination 'platform=iOS Simulator,name=iPhone 17 Pro,OS=26.5' -only-testing:MarketUI-Tests/MarketKeyboardReaderReentrantLayoutTests/test_safeAreaChangeDuringKeyboardReaderUpdateDoesNotReenterBlueprint -quiet