5bf4deb43 Update Dartdoc for SceneBuilder#addPlatformView (flutter/engine#6957) (#24794)

https://github.com/flutter/engine/compare/84e3b137a16d...5bf4deb4353c

git log 84e3b137a16d..5bf4deb4353c --no-merges --oneline
5bf4deb43 Update Dartdoc for SceneBuilder#addPlatformView (flutter/engine#6957)


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bin/internal/engine.version

-84e3b137a16d3c673e89b340fbd2b097a4b5a3ba
+5bf4deb4353c1b25f9db8ded62207353040eb94f