[DX-2615] fix: android custom tabs dismiss callback

[nattb8]

Summary

Context

1. Sometimes, Android dismisses Chrome Custom Tabs before deeplink is triggered. When Chrome Custom Tabs is dismissed, HandleOnLoginPKCEDismissed is called.
2. There are two parts to the PKCE flow
   i. Log into Passport in Chrome Custom Tabs. On success, deeplink the user back into the game.
   ii. After deeplink is called, complete the PKCE login flow. On success, the PKCE login is complete.

Issue 1

Currently, HandleOnLoginPKCEDismissed checks if the SDK is currently trying to connect (using IPS_CONNECTING) and if it is, it will nullify PKCEResponseDelegate. This is not the right way to check, as IPS_CONNECTING is set when PKCE flow starts (point 2i), so if Custom Tabs is dismissed after the second part of PKCE login flow starts (point 2ii) but before it finishes, the PKCEResponseDelegate will no longer be there to call once PKCE login completes.

To fix this issue, IPS_PKCE_COMPLETING is added to indicate when the second part of the PKCE flow starts. If Chrome Custom Tabs is dismissed before the second part, it may nullify the PKCEResponseDelegate.

Issue 2

IPS_CONNECTED is set once the second part of the PKCE flow starts (2ii). This should not be set until OnConnectPKCEResponse is successful.

Customer Impact

Android PKCE flow may not work on some Android devices.

Other things to consider:

• Prefix your PR title with feat: , fix: , chore: , docs: , refactor: or test: .
• N/A Samp e blueprints are updated with new SDK changes
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• N/A Replied to GitHub issues