[flutter_tools] replace MockFlutterVersion usage with fake where possible, move from context (#77390)

This reverts commit 8b6baae4.

Our current top crasher is an unclear error when ProcessManager fails to resolve an executable path. To fix this, we'd like to being adjusting the process resolution logic and adding more instrumentation to track failures. In order to begin the process, the ProcessManager has been folded back into the flutter tool

* opt out the flutter tool

* oops EOF

* fix import

* Update tool_backend.dart

* Update daemon_client.dart

* fix more

This reverts commit 84a7a611.

[flutter_tools] remove branch migration and standardize constructor style for version interface (#70058)

Remove "This is taking a long time" progress timeout and TimeoutConfiguration.

We used to use zip to verify the integrity of downloaded zip archives, but we now use unzip. This removes the .zip method from OperatingSystemUtils.

Re-arrange the implementation of the devtools launcher so that google3 is not required to depend on any devtools packages. Also renames the build_runner folders to isolated to better clarify their intention.

This is no longer used, in favor of just attempting to unzip and handling the exception.

Last batch of test fixes for general shard.