QE OAuth: Ignore the cancelled error so it doesn't override our current error

[pinarol]

Closes https://github.com/Automattic/Gravatar-SDK-iOS/issues/431

Description

We start to detect if the user has cancelled the oauth flow and treat it just like a dismissal of the OAuth flow so we ignore the error and the previous state remains same.

Testing Steps

SwiftUI Demo app > Profile editor with OAuth Follow the steps here https://github.com/Automattic/Gravatar-SDK-iOS/pull/427 to see the wrong email error Restart the oauth flow but this time tap cancel Observe: The same wrong email error remains

cc: @hamorillo

[wpmobilebot]

📲 You can test the changes from this Pull Request in Gravatar UIKit Prototype Build by scanning the QR code below to install the corresponding build.

	App Name	Gravatar UIKit Prototype Build
	Build Number	1339
	Version	1.0
	Bundle ID	com.automattic.gravatar-sdk-demo-uikit.prototype-build
	Commit	e1c52159ac5a91d9875bb422e3f92f5ebcfdbc23
	App Center Build	Gravatar SDK Demo - UIKit #179

Automatticians: You can use our internal self-serve MC tool to give yourself access to App Center if needed.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Gravatar SwiftUI Prototype Build by scanning the QR code below to install the corresponding build.

	App Name	Gravatar SwiftUI Prototype Build
	Build Number	1339
	Version	1.0
	Bundle ID	com.automattic.gravatar-sdk-demo-swiftui.prototype-build
	Commit	e1c52159ac5a91d9875bb422e3f92f5ebcfdbc23
	App Center Build	Gravatar SDK Demo - SwiftUI #178

Automatticians: You can use our internal self-serve MC tool to give yourself access to App Center if needed.