We don't maintain the test-e2e-other-browser job,
and it often fails due to various reasons.
To avoid unnecessary noise in our CI pipeline, we
will remove this job.
We are adding workflow_dispatch trigger to the e2e-tests
workflow, so that we can still run e2e tests on other
browsers when needed from the Github actions UI.
We had to maintains 2 jobs, test-e2e-chromium and
test-e2e-other-browser, in the impress-frontend
workflow.
By factorising the E2E tests into a separate
workflow, we can now maintain only one job for
each browser, which is much simpler and easier
to maintain.
Anthony LC