Add E2E test to perform code suggestion using the Web IDE
This issue is to consider an E2E test for Code Suggestions performed from our WebIDE.
The test would live in the following directory (or EE equivalent): https://gitlab.com/gitlab-org/gitlab/-/tree/master/qa/qa/specs/features/browser_ui/3_create/web_ide?ref_type=heads
Related ask https://gitlab.com/gitlab-org/modelops/applied-ml/code-suggestions/ai-assist/-/issues/252
/cc @nprabakaran