Roll engine 3374f4cce045..fb5b097e5c20 (6 commits) (#23986)

https://github.com/flutter/engine/compare/3374f4cce045...fb5b097e5c20

git log 3374f4cce045..fb5b097e5c20 --no-merges --oneline
fb5b097e5 Revert "Roll freetype2 to a10b062df0c8958d69377aa04ea6554a9961a111 (#6738)" (flutter/engine#6763)
4fd2d1486 Roll src/third_party/skia 5b2bda70e52f..11407e56f277 (1 commits) (flutter/engine#6762)
fa4c01ee6 Add an Info.plist flag to enable the embedded iOS views preview. (flutter/engine#6756)
ded297f59 Roll src/third_party/skia df8225e253a2..5b2bda70e52f (5 commits) (flutter/engine#6761)
f0380b397 Roll src/third_party/skia 32262da42bed..df8225e253a2 (10 commits) (flutter/engine#6755)
124f20f40 Clear the on-screen surface every frame. (flutter/engine#6753)

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https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

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bin/internal/engine.version

-3374f4cce0459dad9c2400b0a05bf0b2e9f8936c
+fb5b097e5c20d2af9d4178530f0f4acd9d173401