Improve inspector hover inspection and setting discoverability

I'm trying to dig through a big widget tree via the inspector in the browser. If I dare to let my cursor pause for just a moment, I get a massive popup about the widget under my cursor. This popup covers half the tree display, and it consumes scroll behavior. It's hugely annoying and makes it nearly impossible to click around the tree.

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**DevTools version**: 2.28.1
**IDE**: Android-Studio
**Connected Device**:
CPU / OS: arm64 (64 bit) ios
Connected app type: Flutter native (debug build)
Dart Version: 3.3.0-26.0.dev
Flutter Version: 3.16.0-12.0.pre.41 / master
Framework / Engine: 4b72a6e831 / 472be42e90

首先，在浏览器检查器中导航大型 widget 树时，复现悬停弹窗的行为。阅读检查器中悬停检查和设置可发现性的入口点，然后根据 issue 确定预期的交互方式。完成的标准是，弹窗不再妨碍树的导航或占用滚动操作，并且相关设置易于找到。

由索引模型根据 Issue 内容生成。