303a3910d fix dartdevc build (flutter/engine#9036) (#33155)

https://github.com/flutter/engine/compare/75963dbb0ba6...303a3910d398

git log 75963dbb0ba62a9dbd7024e568fbe5d499d00d7d..303a3910d398ee48a3411108688ebd5ccc101e8a --no-merges --oneline
303a3910d fix dartdevc build (flutter/engine#9036)

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bin/internal/engine.version

-75963dbb0ba62a9dbd7024e568fbe5d499d00d7d
+303a3910d398ee48a3411108688ebd5ccc101e8a