shelf 1.1.2 -> 1.1.4
flutter_template_images 1.0.2 -> 3.0.0

* 0f28cd6fd [uwptool] Add uninstall command (flutter/engine#26122)

* cf1898369 Fix composition when multiple platform views and layers are combined  (flutter/engine#25900)

* c118a134f Add missing semantics flag for embedder (flutter/engine#25932)

* e0418d2c5 [fuchsia] rename SessionConnection to DefaultSessionConnection (flutter/engine#26104)

* 589f51479 add `TextLeadingDistribution` to webui `TextStyle` (flutter/engine#25777)

* 2ef73bf47 Add support for System.channelWriteEtc and System.channelQueryAndReadEtc. (flutter/engine#26050)

* 247d1d998 Roll Fuchsia Linux SDK from WYD7atCH7... to uffIHSwYt... (flutter/engine#26131)

* 7e34f1ff0 Revert "SceneBuilder.addPicture returns the layer (#26074)" (flutter/engine#26133)

* 26a48f100 Roll Dart SDK from c119194b23d9 to ba8506bdcef7 (2 revisions) (flutter/engine#26135)

* 0fc5600f5 Fix GIR transfer annotation

* b8072ae65 Roll Skia from ca9f6a855071 to 3193a04b09d8 (21 revisions) (flutter/engine#26136)

* 2071b03fd Roll Fuchsia Mac SDK from mdsssGtoC... to y3xw-lhxW... (flutter/engine#26137)

* 6fb2f9423 web: improve engine dev cycle on Windows (flutter/engine#25812)

* 877329553 Windows: UWP ViewController accepts a CoreApplicationView and exposes to plugins (flutter/engine#25879)

* 0507f4a9a Revert "Fix composition when multiple platform views and layers are combined  (#25900)" (flutter/engine#26142)

* pub global deactivate devtools before installing
* upgrade devtools to latest

Adds UwpTool.install and UwpTool.uninstall methods. Refactors the
PowerShell-based install code to move the powershell-related bits out of
the Device class and into UwpTool so that when we swap out the
PowerShell-based install for the uwptool-based install, it's transparent
to the WindowsUWPDevice class.

Adds implementations for:
* WindowsUWPDevice.isAppInstalled
* WindowsUWPDevice.uninstallApp

Refactors:
* WindowsUWPDevice.installApp

* 0f28cd6fd [uwptool] Add uninstall command (flutter/engine#26122)

* cf1898369 Fix composition when multiple platform views and layers are combined  (flutter/engine#25900)

* c118a134f Add missing semantics flag for embedder (flutter/engine#25932)

490068230 Manual roll of Dart SDK to c119194b23d990140e4f8505c6b0a86b60f196bd (flutter/engine#26129) (#82473)