Use combine instead of view modifiers internally

[facumenzella]

Motivation

While having a debugging session with @joshdholtz and @ajpallares we agreed that using preference keys for things that are not SwiftUI 100% makes no sense, and it's flaky. This is an attempt to use combine internally instead of preference keys.

Removing preference keys for the public API is trickier, because the API is deeply tied to that.

Description

• Add methods to CustomerCenterActionWrapper to subscribe to updates
• Make existing PassthroughSubjects private
• Move business logic to the view model, instead of the view.

[emerge-tools[bot]]

📸 Snapshot Test

15 modified, 853 unchanged

Name	Added	Removed	Modified	Renamed	Unchanged	Errored	Approval
RevenueCat com.revenuecat.PaywallsTester.mac-native	0	0	11	0	155	0	⏳ Needs approval
RevenueCat com.revenuecat.PaywallsTester	0	0	3	0	231	0	⏳ Needs approval
RevenueCat com.revenuecat.PaywallsTester.mac-catalyst-optimized-for-mac	0	0	1	0	233	0	⏳ Needs approval
RevenueCat com.revenuecat.PaywallsTester.mac-catalyst-scaled-to-match-ipad	0	0	0	0	234	0	N/A

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[emerge-tools[bot]]

1 build increased size, 3 builds decreased size

Name	Version	Download	Change	Install	Change	Approval
RevenueCat com.revenuecat.PaywallsTester	1.0 (1)	14.7 MB	⬇️ 36.3 kB (-0.25%)	51.1 MB	⬇️ 166.7 kB (-0.33%)	N/A
RevenueCat com.revenuecat.PaywallsTester.mac-catalyst-scaled-to-match-ipad	1.0 (1)	11.9 MB	⬇️ 3.8 kB (-0.03%)	44.1 MB	⬇️ 81.2 kB (-0.18%)	N/A
RevenueCat com.revenuecat.PaywallsTester.mac-catalyst-optimized-for-mac	1.0 (1)	11.9 MB	⬇️ 3.8 kB (-0.03%)	44.1 MB	⬇️ 81.2 kB (-0.18%)	N/A
RevenueCat com.revenuecat.PaywallsTester.mac-native	1.0 (1)	10.5 MB	⬆️ 44.7 kB (0.43%)	38.6 MB	⬆️ 156.4 kB (0.41%)	N/A

RevenueCat 1.0 (1)
com.revenuecat.PaywallsTester

⚖️ Compare build ⏱️ Analyze build performance

Total install size change: ⬇️ 166.7 kB (-0.33%) Total download size change: ⬇️ 36.3 kB (-0.25%)

Largest size changes

Item	Install Size Change
DYLD.String Table	⬇️ -43.4 kB
Code Signature	⬇️ -4.0 kB
🗑 RevenueCatUI.CustomerCenterActionViewModifier.CustomerCenterActio...	⬇️ -2.0 kB
DYLD.Exports	⬇️ -1.9 kB
📝 RevenueCatUI.CustomerCenterEnvironmentActions.Objc Metadata	⬆️ 732 B

View Treemap

RevenueCat 1.0 (1)
com.revenuecat.PaywallsTester.mac-catalyst-scaled-to-match-ipad

⚖️ Compare build ⏱️ Analyze build performance

Total install size change: ⬇️ 81.2 kB (-0.18%) Total download size change: ⬇️ 3.8 kB (-0.03%)

Largest size changes

Item	Install Size Change
DYLD.String Table	⬇️ -80.7 kB
🗑 RevenueCatUI.CustomerCenterActionViewModifier.CustomerCenterActio...	⬇️ -2.0 kB
DYLD.Exports	⬇️ -1.9 kB
Code Signature	⬇️ -1.7 kB
📝 RevenueCatUI.CustomerCenterEnvironmentActions.Objc Metadata	⬆️ 732 B

View Treemap

RevenueCat 1.0 (1)
com.revenuecat.PaywallsTester.mac-catalyst-optimized-for-mac

⚖️ Compare build ⏱️ Analyze build performance

Total install size change: ⬇️ 81.2 kB (-0.18%) Total download size change: ⬇️ 3.8 kB (-0.03%)

Largest size changes

Item	Install Size Change
DYLD.String Table	⬇️ -80.7 kB
🗑 RevenueCatUI.CustomerCenterActionViewModifier.CustomerCenterActio...	⬇️ -2.0 kB
DYLD.Exports	⬇️ -1.9 kB
Code Signature	⬇️ -1.7 kB
📝 RevenueCatUI.CustomerCenterEnvironmentActions.Objc Metadata	⬆️ 732 B

View Treemap

RevenueCat 1.0 (1)
com.revenuecat.PaywallsTester.mac-native

⚖️ Compare build ⏱️ Analyze build performance

Total install size change: ⬆️ 156.4 kB (0.41%) Total download size change: ⬆️ 44.7 kB (0.43%)

Largest size changes

Item	Install Size Change
Code Signature	⬆️ 4.1 kB
DYLD.String Table	⬇️ -2.5 kB
Other	⬆️ 154.8 kB

View Treemap

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Comment trigger: Size diff threshold of 100.00kB exceeded

[facumenzella]

Closing in favor of the new PR