Track VCs being popped from stack from UIKit #620

# to view logs

Job	Run time
Windows (windows-latest, debug)	5m 24s
library (15.4, ios)	8m 1s
Windows (windows-latest, release)	14m 22s
SwiftWasm (swift-DEVELOPMENT-SNAPSHOT-2024-09-12-a, swift-wasm-DEVELOPMENT-SNAPSHOT-2024-09-12-a,...	3m 25s
library (15.4, macos)	6m 23s
library (15.4, tvos)	6m 2s
library (15.4, watchos)	5m 6s
library (15.4, examples)	6m 33s
	55m 16s

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