Update existing examples to v3

[dikwickley]

Fixes: dikwickley/gsoc24#4

This PR is WIP and more examples are underway

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[github-actions]

Status

• ❌ No modified files found in the types directory.
  Please make sure to include types for any changes you have made. Thank you!.

[garg3133]

This needs to be parked for now because there are some issues in the chainable .assert command introduced in the new Element API that need to be fixed first. One important one is how the assertion pass/fail messages are displayed on the terminal.