[connect] Add dark mode example

[lng-stripe]

Summary

Add "dynamic" theme from iOS and fix realtime updates to Appearance on configuration changes.

Motivation

https://jira.corp.stripe.com/browse/MXMOBILE-2989

Testing

• Added tests
• Modified tests
• Manually verified

Screenshots

Screen.Recording.2024-12-13.at.1.41.29.PM-compressed.mov

[lng-stripe]

This is not ideal because in our Example app EmbeddedComponentManager is scoped to our Application while we're updating the appearance per Activity. Practically speaking, it's OK, but it doesn't serve as a great example for integrators.

[github-actions]

Diffuse output:

OLD: identity-example-release-base.apk (signature: V1, V2)
NEW: identity-example-release-pr.apk (signature: V1, V2)

          │          compressed          │         uncompressed         
          ├───────────┬───────────┬──────┼───────────┬───────────┬──────
 APK      │ old       │ new       │ diff │ old       │ new       │ diff 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
      dex │     2 MiB │     2 MiB │  0 B │   4.1 MiB │   4.1 MiB │  0 B 
     arsc │     1 MiB │     1 MiB │  0 B │     1 MiB │     1 MiB │  0 B 
 manifest │   2.3 KiB │   2.3 KiB │  0 B │     8 KiB │     8 KiB │  0 B 
      res │ 301.8 KiB │ 301.8 KiB │  0 B │ 455.5 KiB │ 455.5 KiB │  0 B 
   native │   6.2 MiB │   6.2 MiB │  0 B │  15.8 MiB │  15.8 MiB │  0 B 
    asset │   7.1 KiB │   7.1 KiB │  0 B │   6.9 KiB │   6.9 KiB │  0 B 
    other │  90.2 KiB │  90.2 KiB │ -5 B │ 170.3 KiB │ 170.3 KiB │  0 B 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
    total │   9.6 MiB │   9.6 MiB │ -5 B │  21.5 MiB │  21.5 MiB │  0 B 

 DEX     │ old   │ new   │ diff      
─────────┼───────┼───────┼───────────
   files │     1 │     1 │ 0         
 strings │ 19966 │ 19966 │ 0 (+0 -0) 
   types │  6188 │  6188 │ 0 (+0 -0) 
 classes │  4979 │  4979 │ 0 (+0 -0) 
 methods │ 29759 │ 29759 │ 0 (+0 -0) 
  fields │ 17526 │ 17526 │ 0 (+0 -0) 

 ARSC    │ old  │ new  │ diff 
─────────┼──────┼──────┼──────
 configs │  164 │  164 │  0   
 entries │ 3622 │ 3622 │  0

APK

   compressed    │  uncompressed   │                     
──────────┬──────┼──────────┬──────┤                     
 size     │ diff │ size     │ diff │ path                
──────────┼──────┼──────────┼──────┼─────────────────────
 28.4 KiB │ -6 B │ 62.9 KiB │  0 B │ ∆ META-INF/CERT.SF  
  1.2 KiB │ +1 B │  1.2 KiB │  0 B │ ∆ META-INF/CERT.RSA 
──────────┼──────┼──────────┼──────┼─────────────────────
 29.6 KiB │ -5 B │ 64.1 KiB │  0 B │ (total)

[simond-stripe]

Looks good 👍 Agreed with your comment on scoping mismatch for the EmbeddedComponentManager between the Activity and the App. It's good enough though, and we can always choose to change it later