fix: fixed the aria-label assigning to wrapper div of dropdown

[Gururajj77]

Closes #17558

aria-label value, which was getting assigned to the wrapper div which encircles the dropdown, was caused by downshift's change, is fixed.

Changelog

New

• Nothing's new

Changed

• passing aria-label prop to the downshift's getToggleButtonProps()

Removed

• removed aria-label prop that has been passed to ListBox

Testing / Reviewing

• Navigate to Dropdown component's playground story from deploy preview
• In the controls section, add aria-label as "test" or anything of you liking
• Run the IBM's accessibility checker extension after going to full view mode on the component
• The accessibility violations mentioned in the parent issue should not persist.

[netlify]

✅ Deploy Preview for carbon-elements ready!

Name	Link
🔨 Latest commit	96e1e41
🔍 Latest deploy log	https://app.netlify.com/sites/carbon-elements/deploys/66fa2cc0eda0c80008bd71c6
😎 Deploy Preview	https://deploy-preview-17588--carbon-elements.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[netlify]

✅ Deploy Preview for v11-carbon-react ready!

Built without sensitive environment variables

Name	Link
🔨 Latest commit	96e1e41
🔍 Latest deploy log	https://app.netlify.com/sites/v11-carbon-react/deploys/66fa2cc0226de70008488ac7
😎 Deploy Preview	https://deploy-preview-17588--v11-carbon-react.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.03%. Comparing base (29a4646) to head (96e1e41).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #17588   +/-   ##
=======================================
  Coverage   77.03%   77.03%           
=======================================
  Files         408      408           
  Lines       13993    13993           
  Branches     4301     4321   +20     
=======================================
  Hits        10779    10779           
+ Misses       3042     3041    -1     
- Partials      172      173    +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.