[Feature][Logs]: Keep the chart pinned to the top while scrolling through logs and make it collapsible

### What would you like?

I think the chart should always stay put while scrolling unless the user collapes it to get more screen estate for log data.

### Screenshots or mockups

_No response_

Start by locating the logs view and the chart component responsible for displaying log data. Verify the current scrolling behavior, then implement a pinned chart with a control to collapse and restore it; done means the chart stays visible while scrolling and collapsed mode gives more space to logs.

Written by the indexing model from the issue text.