Enable swift-api-tests in SPM for Remote Config Swift

### Description

Currently only fake console tests are available in SPM, while CI is running both fake console test and swift api tests. This makes it hard for engineer team to make a change and then experience inconsistent test results between local environment and ci environment.

Maybe something to think about down the road about the infrastructure of the real console testing.

### Reproducing the issue

_No response_

### Firebase SDK Version

9.6.0

### Xcode Version

14.0

### Installation Method

Swift Package Manager

### Firebase Product(s)

Remote Config

### Targeted Platforms

iOS

### Relevant Log Output

_No response_

### If using Swift Package Manager, the project's Package.resolved

Expand Package.resolved snippet

```json

Replace this line with the contents of your Package.resolved.

```

### If using CocoaPods, the project's Podfile.lock

Expand Podfile.lock snippet

```yml

Replace this line with the contents of your Podfile.lock!

```