Refactor for cancellable speech (PR #11049)
Merge remote-tracking branch 'origin/pr/11049'
PR #10885 introduces a way to cancel speech due to focus events that are no
longer valid. However, the refactoring commits made the diff hard to view.
Some static analysis tools did not understand several classes due to their order
in the file. This change re-orders those classes so they are defined before
they are used. It also makes that code pass the flake8 checks. The move
and restyling are done in separate commits to make revisiting the
changes easier.
Turning off white space in the diff will also make this easier.
- Speech manager changes:
- Explicit imports
- More typing information added to function definitions.
- synthDriverHandler changes:
- The order of classes. Now defined before they are used.
