Finish yapf upgrade to 0.43.0

[jrmccluskey]

The yapf version was updated in #33112 but the change was not extended to the linting/formatting workflows, keeping them at 0.29.0 and not breaking the workflows because the code base had not been re-formatted. This updates the workflows and reformats the codebase in one go.

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[jrmccluskey]

Formatter workflow: https://github.com/apache/beam/actions/runs/12694684617
Lint workflow: https://github.com/apache/beam/actions/runs/12694686082

[github-actions]

Checks are failing. Will not request review until checks are succeeding. If you'd like to override that behavior, comment assign set of reviewers

[jrmccluskey]

Looks like there's probably more work to do here in terms of tests failing (not able to account for a lot of the failures easily) so I'll just revert the version upgrade instead.