fix: textarea inner rounded

[KKishikawa]

📑 Description

This PR fixes a visual issue with Textarea having a header or footer. If Textarea has a header and no footer, the bottom corners of Textarea will appear to be missing. The same applies if there is only a footer.

with header (current ver.)
The bottom corners are missing

with footer (current ver.)
The top corners are missing

fixed

Status

• Not Completed
• Completed

✅ Checks

• My pull request adheres to the code style of this project
• My code requires changes to the documentation
• I have updated the documentation as required
• I have checked the page with https://validator.unl.edu/
• All the tests have passed
• My pull request is based on the latest commit (not the npm version).

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Name	Status	Preview	Comments	Updated (UTC)
flowbite-svelte	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 2, 2023 1:30pm
flowbite-svelte-update	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 2, 2023 1:30pm