Enable Customer Session by default in playground

[samer-stripe]

Summary

Enable Customer Session by default in playground

Motivation

We want to test our our features with CustomerSession more often as we begin to ramp up merchants onto it and make it our default integration eventually.

Testing

• Added tests
• Modified tests
• Manually verified

[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 │ 302.6 KiB │ 302.6 KiB │  0 B │ 456.7 KiB │ 456.7 KiB │  0 B 
   native │   6.2 MiB │   6.2 MiB │  0 B │  15.8 MiB │  15.8 MiB │  0 B 
    asset │   7.2 KiB │   7.2 KiB │  0 B │   6.9 KiB │   6.9 KiB │  0 B 
    other │  90.8 KiB │  90.8 KiB │ -2 B │   171 KiB │   171 KiB │  0 B 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
    total │   9.6 MiB │   9.6 MiB │ -2 B │  21.5 MiB │  21.5 MiB │  0 B 

 DEX     │ old   │ new   │ diff      
─────────┼───────┼───────┼───────────
   files │     1 │     1 │ 0         
 strings │ 19978 │ 19978 │ 0 (+0 -0) 
   types │  6194 │  6194 │ 0 (+0 -0) 
 classes │  4985 │  4985 │ 0 (+0 -0) 
 methods │ 29821 │ 29821 │ 0 (+0 -0) 
  fields │ 17538 │ 17538 │ 0 (+0 -0) 

 ARSC    │ old  │ new  │ diff 
─────────┼──────┼──────┼──────
 configs │  164 │  164 │  0   
 entries │ 3624 │ 3624 │  0

APK

   compressed    │   uncompressed   │                        
──────────┬──────┼───────────┬──────┤                        
 size     │ diff │ size      │ diff │ path                   
──────────┼──────┼───────────┼──────┼────────────────────────
 28.6 KiB │ +2 B │  63.2 KiB │  0 B │ ∆ META-INF/CERT.SF     
  1.2 KiB │ -2 B │   1.2 KiB │  0 B │ ∆ META-INF/CERT.RSA    
 25.4 KiB │ -2 B │  63.1 KiB │  0 B │ ∆ META-INF/MANIFEST.MF 
──────────┼──────┼───────────┼──────┼────────────────────────
 55.2 KiB │ -2 B │ 127.5 KiB │  0 B │ (total)