68 test locator violations resolved in NDV page object

Test locators in the NodeDetailsViewPage page object have been tightened to prevent interaction with elements outside their intended scope. Sixty-eight calls to this.page.getByTestId() were changed to this.getContainer().getByTestId(), enforcing the janitor's scope-lockdown rule across the file.

The scope-lockdown rule exists to keep tests isolated — locators should find elements within their page object container, not traverse the entire page. This prevents tests from accidentally interacting with elements from other components that happen to share the same test ID.

Portal elements like expression modals, resource locator dropdowns, credential dropdowns, and the fullscreen code editor remain page-scoped because they render outside the NodeDetailsViewPage DOM tree.

The janitor baseline was updated to reflect the resolved violations, dropping from 496 to 440 violations across the codebase. This change lives in the Playwright testing package and improves the reliability of end-to-end tests that interact with node configuration.