Cheng Liangyu

Capture `transaction.experience.longtask` for all transaction

2

There are longtask spans in other transactions(user-interaction, http-request), but only page-load transactions have longtask metrics in `transaction.experience.longtask`.

To impove performance, I think we can skip the plugin on case sensitive file systems.

[preact/compact] Suppport react-is

3

**Describe the feature you'd love to see** Some libraries use `react-is` to check types of react element. Will `@preact/compat` support `react-is`? **Additional context (optional)** https://www.npmjs.com/package/react-is ``` // for example import...