Cached auth user not loading on fast force close and reopen

[bucky63]

Description

iOS 18 is preventing the previous cached user to load if the app is force closed and reopened too quickly.

Reproducing the issue

Force close the app and relaunch with minimal delay.

Firebase SDK Version

11.3.0

Xcode Version

16.0

Installation Method

Swift Package Manager

Firebase Product(s)

Authentication

Targeted Platforms

iOS

Relevant Log Output

No response

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If using CocoaPods, the project's Podfile.lock

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[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.