restorePreviousSignIn() fails when JitsiMeetSDK is installed (Keychain conflict)

Description:
GIDSignIn.sharedInstance.restorePreviousSignIn() silently fails to restore sessions when JitsiMeetSDK (v11.3.1) is present in the project. The same code works immediately after removing JitsiMeetSDK, indicating a Keychain access conflict.

Expected Behavior:
Google Sign-In should restore sessions regardless of other SDKs’ Keychain usage.

Evidence:

Error: Error Domain=com.google.GIDSignIn Code=-4

Works perfectly when JitsiMeetSDK is removed

Console shows Keychain entitlement mismatches

Environment:

GoogleSignIn 90.0
iOS 16+
Physical devices only

从 GIDSignIn.sharedInstance.restorePreviousSignIn() 开始，在安装了 JitsiMeetSDK 11.3.1 的实体 iOS 16+ 设备上复现该故障。比较 Google Sign-In 和 JitsiMeetSDK 的 Keychain entitlements，并验证同时存在两个 SDK 时，会话能够在没有 -4 错误或 entitlement 不匹配的情况下恢复。

由索引模型根据 Issue 内容生成。