Added HasLabelAsText interface to ButtonElement

[joelpop]

Description

Elements having their labels in their text (such as buttons) must implement a new, method-less interface HasLabelAsText in their element tester (such as NativeButtonElement for the NativeButton component and ButtonElement for the Button component) in order for the withCaption[Containing] selectors to work for them.

This is a related Flow Components change for https://github.com/vaadin/testbench/issues/1183

Type of change

• [ ] Bugfix
• [x] Feature

Checklist

• [x] I have read the contribution guide: https://vaadin.com/docs/latest/contributing/overview
• [x] I have added a description following the guideline.
• [x] The issue is created in the corresponding repository and I have referenced it.
• [x] I have added tests to ensure my change is effective and works as intended.
• [x] New and existing tests are passing locally with my change.
• [x] I have performed self-review and corrected misspellings.
• [ ] I have not completed some of the steps above and my pull request can be closed immediately.

Additional for Feature type of change

• [x] Enhancement / new feature was discussed in a corresponding GitHub issue and Acceptance Criteria were created.

[CLAassistant]

All committers have signed the CLA.

[joelpop]

The tests look good. However, I would not mix the jetty upgrade in this PR.

Removed.

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[vaadin-bot]

This ticket/PR has been released with Vaadin 24.5.0.alpha1 and is also targeting the upcoming stable 24.5.0 version.