Remove IntentConfirmationInterceptor interface from CustomerSheetSetupIntentInterceptor

[samer-stripe]

Summary

Remove IntentConfirmationInterceptor interface from CustomerSheetSetupIntentInterceptor

Motivation

Not needed for this interceptor

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 │   2.1 MiB │   2.1 MiB │  0 B │   4.3 MiB │   4.3 MiB │  0 B 
     arsc │   1.1 MiB │   1.1 MiB │  0 B │   1.1 MiB │   1.1 MiB │  0 B 
 manifest │   2.3 KiB │   2.3 KiB │  0 B │     8 KiB │     8 KiB │  0 B 
      res │ 303.5 KiB │ 303.5 KiB │  0 B │ 457.7 KiB │ 457.7 KiB │  0 B 
   native │   7.9 MiB │   7.9 MiB │  0 B │  19.3 MiB │  19.3 MiB │  0 B 
    asset │   7.7 KiB │   7.7 KiB │  0 B │   7.5 KiB │   7.5 KiB │  0 B 
    other │  95.6 KiB │  95.6 KiB │ -8 B │ 183.6 KiB │ 183.6 KiB │  0 B 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
    total │  11.5 MiB │  11.5 MiB │ -8 B │  25.4 MiB │  25.4 MiB │  0 B 

 DEX     │ old   │ new   │ diff      
─────────┼───────┼───────┼───────────
   files │     1 │     1 │ 0         
 strings │ 20721 │ 20721 │ 0 (+0 -0) 
   types │  6513 │  6513 │ 0 (+0 -0) 
 classes │  5277 │  5277 │ 0 (+0 -0) 
 methods │ 31557 │ 31557 │ 0 (+0 -0) 
  fields │ 18290 │ 18290 │ 0 (+0 -0) 

 ARSC    │ old  │ new  │ diff 
─────────┼──────┼──────┼──────
 configs │  163 │  163 │  0   
 entries │ 3667 │ 3667 │  0

APK

    compressed    │  uncompressed   │                     
──────────┬───────┼──────────┬──────┤                     
 size     │ diff  │ size     │ diff │ path                
──────────┼───────┼──────────┼──────┼─────────────────────
 29.2 KiB │ -11 B │ 64.6 KiB │  0 B │ ∆ META-INF/CERT.SF  
  1.2 KiB │  +3 B │  1.2 KiB │  0 B │ ∆ META-INF/CERT.RSA 
──────────┼───────┼──────────┼──────┼─────────────────────
 30.4 KiB │  -8 B │ 65.9 KiB │  0 B │ (total)