Duo Chat: truncate the chat input only for placeholder
What does this MR do and why?
https://gitlab.com/gitlab-org/gitlab/-/issues/416236+ assumed truncation only of the placeholder text on the smaller viewports. However, the way we implemented it in Truncate prompt placeholder/wrap feedback optio... (!126459 - merged) was that we always truncate the field's input. Which led to another issue: Text input does not wrap on to multiple lines (#420586 - closed)
This MR adjusts the previously merged solution to make sure we truncate the placehoder only and not the actual prompt when user starts typing.
Screenshots or screen recordings
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| Before | After (desktop) | After (small viewport) |
|---|---|---|
 |
prompt-truncate-desktop | prompt-truncate-mobile |
How to set up and validate locally
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Related to #420586 (closed)