[UI Test] Test for "login not WP" case.

[hafizrahman]

Closes: #13097

Description

Steps to reproduce

Testing information

The tests that have been performed

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[dangermattic]

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	App Name	WooCommerce-Wear Android
	Platform	⌚️ Wear OS
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[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce Android by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce Android
	Platform	📱 Mobile
	Flavor	Jalapeno
	Build Type	Debug
	Commit	2b6c9a1
	Direct Download	woocommerce-prototype-build-pr13098-2b6c9a1.apk

[hichamboushaba]

remark, the . in the site address there matches any character, you might want to replace it with \\.

[hichamboushaba]

Remark, technically, the error is shown on the SiteAddressScreen, saying LoginNotWPScreen could be confusing in the future; I suggest putting the logic of this class in the same SiteAddressScreen class, and updating the openLoginNotWpScreen with something like enterNonWPAddress, WDYT?