fix(amazonq): fixing visual bugs in prompt input field

[viktorsaws]

Problem

There are 2 minor visual bugs in Amazon Q Chat UI:

• When the prompt input text exceeds the width of the chat box it's not always wrapped correctly.
• When user types empty spaces at the beginning of lines inside prompt, it appears like a code block instead of a paragraph.

Solution

• Prompt input is properly sized and matches with the textarea underneath.
• Removed empty spaces for each line.

MynahUI 4.15.2

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.