Issue number: resolves #29523

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## What is the current behavior?
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The scrollable segment flickers on iOS physical devices or simulators
when the active button is near the edge of the screen. The jump is due
to the button being scrolled to the center and snaps back to the edge
since the button was scrolled past the container.

## What is the new behavior?
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this PR. -->

- Switched to `scrollTo` provides for a smoother transition.
- Gave co author credit to the original reporter since they provided
part of the solution
- No new tests were created since functionality stays the same and
testing on Playwright would be impossible to recreate

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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screenshots of how the component looks before and after the change. -->

Dev build: 8.3.2-dev.11726779768.16e1f1d2

How to test:
1. Create a new app through any starter
2. Add a scrollable segment with at least 6 buttons (code snippet
example below)
3. Recommended to change the segment mode to `md` since it's easier to
see the flicker
4. Build the app and open it in an iOS or simulator (if more
instructions on how to do this is needed, reach out to me)
5. Click on the third button
6. Click on the first button
7. Notice the flicker
8. Click over to the third to last button
9. Click on either the last two buttons
10. Notice the flicker
11. Install the dev build
12. Verify the load does not flicker
13. Repeat steps 4 and 5
14. Verify the flicker is no longer there
15. Repeat steps 7 and 8
16. Verify the flicker is no longer there


```js
<ion-segment value="2" scrollable="true" mode="md">
  <ion-segment-button value="1">
    <ion-label>Button 1</ion-label>
  </ion-segment-button>
  <ion-segment-button value="2">
    <ion-label>Button 2</ion-label>
  </ion-segment-button>
  <ion-segment-button value="3">
    <ion-label>Button 3</ion-label>
  </ion-segment-button>
  <ion-segment-button value="4">
    <ion-label>Button 4</ion-label>
  </ion-segment-button>
  <ion-segment-button value="5">
    <ion-label>Button 5</ion-label>
  </ion-segment-button>
  <ion-segment-button value="6">
    <ion-label>Button 6</ion-label>
  </ion-segment-button>
</ion-segment>
```

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Co-authored-by: rostislavcz <[email protected]>