Is there a way to specify `deps` per-architecture when using `apple_xcframework`?

Hello!

I'm trying to use `apple_xcframework` to, well, make an XCFramework. I want to be able to specify different `deps` depending on what I've passed to `ios`, like so:

```
apple_xcframework(
name = "MyLibrary",
public_hdrs = [
"MyLibrary.h",
],
infoplists = ["Info.plist"],
bundle_id = "...",
ios = {
"simulator": [
"arm64",
],
"device": [
"arm64",
],
},
minimum_os_versions = {
"ios": "15.0",
},
deps = select({
"//mediapipe:ios_sim_arm64": [
":MyLibrary",
],
"//conditions:default": [
":MyLibrary",
"@ios_opencv//:OpencvFramework",
],
}),
)
```

The idea is that I don't link to OpenCV when compiling for the simulator. This kind of thing works when I call Bazel to build several frameworks, as I can use `select` and build one at a time. But when using apple_xcframework, I use one config for the whole thing. Assuming I don't misunderstand anything here (and I probably do) what can I do?

Thanks!

Start by reading the apple_xcframework rule and tracing how its single deps attribute is applied across the architectures in the ios configuration. Determine whether per-architecture dependencies can be supported without separate configurations, and confirm the behavior with an XCFramework build covering simulator and device inputs.

Written by the indexing model from the issue text.