[Bookings] Use cached tabs visibility

[RafaelKayumov]

WOOMOB-1486

Description

Applies eligibility/visibility cached values for POS and Booking tabs visibility upon presenting.

• Adds static method for Bookings tab initial visibility in BookingsTabEligibilityChecker
• Adds static method for POS tab visibility initial check in POSTabVisibilityChecker
• Setup POS and Bookings tab (and viewcontrollers overall) basing on cached initial visibility mentioned above
• Adds tests

Test Steps

• Use 2 sites where 1st site is non CIAB and supports POS, and the 2nd site is CIAB site with bookable products / bookings.
• Run the app with the non-CIAB site
• In Menu - site selector switch to a CIAB site
• In Menu - site selector switch back to non-CIAB site again
• Repeat switching a few times
• During switching make sure the required POS or Bookings tab is displayed instantly in tabbar without any delay.
• Consider testing on iPhone. The non-CIAB site won't hate the POS tab.
• Use demo videos as testing hint

Site Switching Demo

siteSwitching.mov

App Launching Demo

AppLaunching.mov

---

• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[dangermattic]

	1 Warning
⚠️	This PR is assigned to the milestone 23.6. This milestone is due in less than 2 days. Please make sure to get it merged by then or assign it to a milestone with a later deadline.

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[wpmobilebot]

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

	App Name	WooCommerce iOS Prototype
	Build Number	pr16292-35cece2
	Version	23.5
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	35cece2
	Installation URL	52t2b50o279vg

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

[itsmeichigo]

This works as expected, good job!

[itsmeichigo]

Nit: why don't we set the checker using the local variable?

Suggested change

	self.posTabVisibilityChecker = posTabVisibilityCheckerFactory(site)
	self.posTabVisibilityChecker = posTabVisibilityChecker

[RafaelKayumov]

Done in dec1f90