* c9b0f70b0 Roll Dart SDK from f59531cc2973 to a6b70ecf9e48 (5 revisions) (flutter/engine#30776)

* b5a9cfd53 Roll Skia from 55b4dc3f7a1c to 8a85ab0d96a1 (1 revision) (flutter/engine#30777)

* 58305d13a Roll Skia from dd575bc0f1f5 to 0056f3f006de (2 revisions) (flutter/engine#30765)

* 92a4f99c0 Allow additional expose_dirs in flutter_runner (flutter/engine#30749)

* 358605ca0 [web] Remove EngineParagraph and ParagraphGeometricStyle (flutter/engine#30766)

* 8b9f625bd Remove glitch when displaying platform views (flutter/engine#30724)

* bd6533032 Add missing dependencies to the background image app (flutter/engine#30769)

* 65dfc9e3b [android] Remove the FlutterView casting, add a @NonNull and fix code style (flutter/engine#30734)

* 00e2a47e0 Roll Skia from 0056f3f006de to 3e1354a592bc (3 revisions) (flutter/engine#30771)

* 279e3af0a Implemented library uri support for FlutterFragments and FlutterActivities (flutter/engine#30726)

* 36ad9f1bb Roll Skia from 3e1354a592bc to 55b4dc3f7a1c (1 revision) (flutter/engine#30773)

Clarify in the docs about what an invalid selection means, contrasted with a 0,0 selection.