chore(connection-form): assert functional rename of KMS provider in tests

[kraenhansen]

Description

Small update to the connection-form KMS provider test, to make failures easier to debug by failing ealier.

Checklist

• New tests and/or benchmarks are included
• Documentation is changed or added
• If this change updates the UI, screenshots/videos are added and a design review is requested
• If this change could impact the load on the MongoDB cluster, please describe the expected and worst case impact
• I have signed the MongoDB Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)

Motivation and Context

• Bugfix
• New feature
• Dependency update
• Misc

Open Questions

Dependents

Types of changes

• Backport Needed
• Patch (non-breaking change which fixes an issue)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to change)

[Copilot]

Pull Request Overview

This PR adds an assertion to the CSFLE tab test to verify that the KMS provider name input field updates correctly after user interaction. The change improves test reliability by catching input update failures earlier in the test execution.

• Adds type annotation to the input element selector
• Adds assertion to verify the input value matches the expected value after user interaction

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