[UI] Correct Dropdown Errors, Improve Environment Selection, and Update Visual Design in Meshery UI about meshery

[github-actions]

This issue has been labeled with 'component/ui'. 🧰 Here are docs on Contributing to Meshery UI. 🎨 Here is the Meshery UI Figma File File. Lastly, here are docs on Contributing to Meshery's End-to-End Tests Using Cypress.

---

        Be sure to join the community, if you haven't yet and please leave a ⭐ star on the project 😄

[Sajal0208]

@AjaxAueleke I would like to work on this issue. Can you please assign it to me?

[AjaxAueleke]

@Sajal0208, thanks! Yes, I can. Go ahead, and best of luck.

One more thing, as I'm not an active contributor anymore, if you have any questions or find yourself stuck, please feel free to ask your questions on Slack or in the discussion forum:
https://discuss.layer5.io

[sudhanshutech]

@Sajal0208 any progress? have you built meshery ?

[Sajal0208]

Hey @sudhanshutech, Yes I have been working on the issue. I will commit the changes by tomorrow's EOD.

[sudhanshutech]

@Sajal0208 ?