Summary: Tests that scripts execute, with basic verification of what actually ran.

Test Plan: Run Cypress as normal (see `src/ui/cypress/README.md`).

Reviewers: michelle, vihang

Reviewed By: michelle

JIRA Issues: PC-1424
Signed-off-by: Nick Lanam <nlanam@pixielabs.ai>

Differential Revision: https://phab.corp.pixielabs.ai/D10785

GitOrigin-RevId: 48cde2eaffbdc3c6e617d996b2fed9a022b93b3e