export internal types such as StyleRenderProps, ScrollableProps, etc

### Provide a general summary of the feature here

When extending functionality (e.g. doing what I mentioned in [here](https://github.com/adobe/react-spectrum/issues/6403#issuecomment-2116904029)),
or composing components in general, it's very often that we will need to access those types.

Utils like `Pick` and `Omit` may not work all the time, e.g. when distribution is involved or configuration differences such as `strict` or `exactOptionalPropertyTypes`.

### 🤔 Expected Behavior?

export types used by public types

### 😯 Current Behavior

They are not exported

### 💁 Possible Solution

_No response_

### 🔦 Context

Note that it is true that exporting more types increase the surface area of the public API, making type-level breakage more easy to occurs.
So it is a balance between stability and extensibility.

Each library takes a different stance on this.
Some disregards type-level breaking changes as breaking changes,
Some do that conditionally, such as identifying some types as key types based on basic usage vs advance usage.
Some fully respect that such as some library focus on types.

### 💻 Examples

_No response_

### 🧢 Your Company/Team

_No response_

### 🕷 Tracking Issue

_No response_