bug: Ionic refresher gesture double mounted with incorrect ion-content-scroll-host

### Prerequisites

- [X] I have read the [Contributing Guidelines](https://github.com/ionic-team/ionic-framework/blob/main/.github/CONTRIBUTING.md#creating-an-issue).
- [X] I agree to follow the [Code of Conduct](https://ionicframework.com/code-of-conduct).
- [X] I have searched for [existing issues](https://github.com/ionic-team/ionic-framework/issues) that already report this problem, without success.

### Ionic Framework Version

v7.x

### Current Behavior

In certain cases, a non-native IonRefresher gesture handler will get double-mounted (you can tell by stepping through code and seeing `this.gesture` in refresher.ts is called twice in a row).

One of the mounts will have the incorrect `.ion-content-scroll-host` setup and it causes the feed to refresh any time you try to scroll up.

Note: I realize the IonRefresher is being (ab)used, mounted then quickly unmounted and remounted, and there's a better way to do this where it will not cause a double-mounted gesture. However, I'm experiencing this issue in Voyager intermittently (see: https://github.com/aeharding/voyager/issues/718). This reproduction is just the best way I can demonstrate this issue in a consistently reproducible manner.

### Expected Behavior

Gestures should never be double mounted. `.ion-content-scroll-host` should always be correctly connected.

### Steps to Reproduce

1. Clone reproduction
2. `pnpm i`
3. `ionic serve`
4. Using an Android device, or Chrome simulator emulating an Android device, scroll down, then scroll up. See feed refresh.

### Code Reproduction URL

https://github.com/aeharding/refresher-race

### Ionic Info

```
Ionic:

Ionic CLI : 7.1.1 (/Users/aeharding/.nvm/versions/node/v20.8.1/lib/node_modules/@ionic/cli)
Ionic Framework : @ionic/react 7.5.1

Capacitor:

Capacitor CLI : 5.5.1
@capacitor/android : not installed
@capacitor/core : 5.5.1
@capacitor/ios : not installed

Utility:

cordova-res : not installed globally
native-run : not installed globally

System:

NodeJS : v20.8.1 (/Users/aeharding/.nvm/versions/node/v20.8.1/bin/node)
npm : 10.1.0
OS : macOS Unknown
```

### Additional Information

https://github.com/aeharding/voyager/issues/718

https://github.com/ionic-team/ionic-framework/assets/2166114/069c842d-135b-4d18-8161-5b088db6df50

Start with the refresher.ts gesture handling and reproduce the race using the linked refresher-race project: install dependencies with pnpm i, run ionic serve, and test Android-mode scrolling. Compare the two gesture mounts and their ion-content-scroll-host connections. Done means gestures mount only once and scrolling up no longer triggers an unintended refresh.

Written by the indexing model from the issue text.