Roll engine 5a694c47738d..c02dd8f935a4 (2 commits) (#24452)

https://github.com/flutter/engine/compare/5a694c47738d...c02dd8f935a4

git log 5a694c47738d..c02dd8f935a4 --no-merges --oneline
c02dd8f93 Don't load a splash screen by default (flutter/engine#6883)
8a42213d0 Remove unused examples targets. (flutter/engine#6882)


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bin/internal/engine.version

-5a694c47738d752d5ccd725fda2d3ef068209392
+c02dd8f935a410cee6282b9e316a65e85c24d6ea