Rename data-explorer UI module to chart

[tenthe]

Body

The UI module has been renamed from data-explorer to chart in the app, but the corresponding code changes haven’t been applied yet. This issue tracks the updates required in the UI code to reflect the new module name.

• Rename data explorer services #3986
• Rename ui folders of data explorer to chart #4021

StreamPipes Committer

I acknowledge that I am a maintainer/committer of the Apache StreamPipes project.

[Brijesh-Thakkar]

Hi @tenthe 👋

I’ve opened a PR that completes the UI refactor by renaming all remaining
data-explorer UI references to chart, including chart widgets, config
components, and shared base selectors.

PR: #4081
This should fully address the missing UI changes mentioned in this issue.
Please let me know if anything needs to be adjusted. Thanks!