Debugger ComponentTree and SelectedComponent not resizable.

### What happened?

This window is not resizable, does not render well on various screen sizes, and has a handle for resizing that does nothing.

### What do you expect?

I should be able to resize these windows so I can actually see what their values are, currently I have to scroll through the content with this tiny little area.

### How can we reproduce this?

Maybe it's because I'm using Edge instead of Chrome, I will not install Chrome on my system again, but Edge is based on Chromium so I'd be surprised if that was the issue.

### What steps should take to fix this?

_No response_

### Do have an example of where the bug occurs?

_No response_

### Relevant log output

```shell

```

### Execute in a terminal and put output into the code block below

Output of: flutter doctor -v

### Affected platforms

All

### Other information

_No response_

### Are you interested in working on a PR for this?

- [ ] I want to work on this