Update docs for inline drawer demo.

[edonehoo]

To avoid confusion, remove the "cannot be minimized" bit of the docs for https://www.patternfly.org/patternfly-ai/chatbot/overview/demo#inline-drawer-chatbot.

[github-actions]

🎉 This issue has been resolved in version 6.4.0-prerelease.22 🎉

The release is available on:

• GitHub release
• npm package (@prerelease dist-tag)

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