bug: ion-tab is not initially selected with react router (starting in Ionic v8.6)

[aeharding]

Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

v8.x

Current Behavior

I recently attempted upgrading from Ionic v8.5 to latest.

I noticed an issue starting in Ionic v8.6. When using with react-router, the initial rendered tab is not selected.

This issue can be easily reproduced by checking the Ionic docs codepend for ion-tabs with React Router (observe the "Listen Now" button color):

Version	Demo Link	Screenshot
v8.6	StackBlitz Demo
v8.5	StackBlitz Demo

Expected Behavior

The initial route should automatically activate the appropriate ion-tab.

Steps to Reproduce

1. Open above codepens
2. Observe "Listen Now" button

Code Reproduction URL

https://stackblitz.com/edit/lcx3ywfg

Ionic Info

N/A

Additional Information

No response

[aeharding]

Just realized this is a duplicate of #30552, closing