ux: Standard stop button 🟥

[brunobergher]

Instead of turning the "send message" button into a stop button, we show a big "cancel" button right above the chat area, which is a bit odd and takes up a lot of space.

This PR makes the behavior more standard:

When the user clicks it, we show friendlier and easier to understand button copy:

And if you type more text, you can see a button to enqueue messages, which clarifies the interaction.

Hopefully it's one less thing for people to learn when getting started, getting them going.

Closes ROO-493

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Important

Introduces a standard stop button and message enqueue functionality in the chat interface, with updates to UI and i18n files.

• UI Changes:
  • Replaces large "cancel" button with a standard stop button in ChatTextArea.tsx.
  • Adds enqueue message button when streaming and user has typed content in ChatTextArea.tsx.
  • Updates button labels and tooltips for stop and enqueue actions.
• Functionality:
  • Introduces onStop and onEnqueueMessage props in ChatTextArea.tsx.
  • Implements handleStopTask and handleEnqueueCurrentMessage in ChatView.tsx.
• Localization:
  • Updates i18n files for multiple languages to include new button labels and tooltips for stop and enqueue actions.

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[roomote]

Rooviewer   See task on Roo Cloud

All issues resolved. Ready for merge.

• Typo in English translation: "Contninue" should be "Continue" in proceedWhileRunning.title

Previous reviews

• 67656cf: Review #1
• 47db0a3: Review #2

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}

[roomote]

Rooviewer   See task on Roo Cloud

All issues resolved. Ready for merge.

• Typo in English translation: "Contninue" should be "Continue" in proceedWhileRunning.title

_{Mention @roomote in a comment to request specific changes to this pull request or fix all unresolved issues.}