Summary
The test consists of multiple parts, where some of which are not working correctly:

• Test: "Completes serverless workflow from an empty file" is failing, because the expected output was not updated to current data for JSON and YAML. For the YAML file, some properties needed to be added quotation marks.
• Test: "Completes serverless workflow with function and state autocompletion" for JSON files is sometimes failing on assertion of the number of nodes expected in the viewer. Different fail was spotted in asserting that text editor and diagram viewer are both open.
  Added requirement to run smoke test before running different tests.

Goal
Resolve errors and stabilize the test `serverless-workflow-editor-extension-autocompletion.test.ts`.

Acceptance criteria
The tests are working without errors, are stable and are not failing locally and neither on the CI.