[ DWDS ] Reestablish WS connections with app and Chrome debugger (#2728)

When the computer enters sleep mode, Chrome does not attempt to
reestablish websocket connections when the computer wakes up. This would
break debugging of web applications when DWDS is configured to
communicate with the Chrome debugger or the debugged application is
using web sockets to communicate with DWDS.

This change adds some retry logic to reestablish these web socket
connections from the injected client and to the Chrome debugger.

Related to flutter/flutter#179886

[ DWDS ] Correctly report the current pause state for the WebSocketPr…

…oxyService (#2710)

Fixes failing tests that started when attempting to roll 26.2.1 into Flutter.

Also prepares for 26.2.2 release.

[ DWDS ] Prepare for 26.2.1 release (#2708)

This is a hotfix release that will be cherry picked into Flutter for …

…the next stable release.

Contains the following change applied on top of `25.1.0+1`:

- #2699

[ DWDS ] Refactor `AppInspector` to support both Chrome and Web Socke…

…t connections (#2700)

Created two new subclasses of `AppInspector`: `ChromeAppInspector` and
`WebSocketAppInspector`. Functionality that doesn't require knowledge of
the specific DWDS connection mode (e.g., WIP vs WS) remains in the now
abstract `AppInspector`, and functionality specific to the connection
mode is now implemented in the respective `*AppInspector` subclass.

This allows for sharing logic around maintaining caches for scripts and
libraries.

[DWDS] Fixes hot reload/restart crashes after closing browser tab on …

…web-server device (#2699)

* added NoClientsAvailableException logic

* updated version to prepare for release

* updated version number

* addressed comments

* remove duplicate logging

* updated to throw RpcError

* reverted chnages to _ReloadReportWithMetadata

* updated changelog

* refactored string No clients available for ....

* updated to use kIsolateCannotReload

* updated string

[ DWDS ] Expose `dtdUri` via `DebugConnection` (#2694)

This is needed to access the DTD instance spawned by DDS.

This is a hotfix release that will be cherry picked into Flutter for …

…the next stable release.

Contains the following two changes applied on top of `25.1.0`:

- #2695
- #2694

[ DWDS ] Serve DevTools from DDS by default (#2681)

In order to reduce the number of ways DevTools is served across the
ecosystem, we're working on serving DevTools from DDS by default in all
tools that spawn DDS.

This change exposes some new DDS related configuration options that
allow for specifying whether or not DevTools should be served via DDS
and whether or not an existing DevTools server should be used.

The `devToolsLauncher` parameter has been marked as deprecated as it
will be removed in a future major release, but will continue to act as
the default way to launch DevTools if it is provided. Other DDS related
properties that have been merged into the new
`DartDevelopmentServiceConfiguration` class are also marked as
deprecated.

[ DWDS ] Fix issue where null was repeatedly sent to connected clients (

#2678)

This is a regression from 1c29125 and
was reported in flutter/flutter#174437