Revert adding the payment method header when there is a single payment method type

[amk-stripe]

Summary

Revert adding the payment method header when there is a single payment method type

Reverts this part of #11582: "Also adds the payment method header when there is a single payment method type"

Motivation

Introduces a bug where wallet buttons are shown more often than expected

Testing

• Added tests
• Modified tests
• Manually verified

Screen recording

wallet.buttons.fix.mp4

[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 │ 302.7 KiB │ 302.7 KiB │  0 B │ 456.5 KiB │ 456.5 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 │   7.4 KiB │   7.4 KiB │  0 B 
    other │  95.7 KiB │  95.7 KiB │ +3 B │ 183.5 KiB │ 183.5 KiB │  0 B 
──────────┼───────────┼───────────┼──────┼───────────┼───────────┼──────
    total │  11.5 MiB │  11.5 MiB │ +3 B │  25.4 MiB │  25.4 MiB │  0 B 

 DEX     │ old   │ new   │ diff      
─────────┼───────┼───────┼───────────
   files │     1 │     1 │ 0         
 strings │ 20699 │ 20699 │ 0 (+0 -0) 
   types │  6513 │  6513 │ 0 (+0 -0) 
 classes │  5277 │  5277 │ 0 (+0 -0) 
 methods │ 31547 │ 31547 │ 0 (+0 -0) 
  fields │ 18262 │ 18262 │ 0 (+0 -0) 

 ARSC    │ old  │ new  │ diff 
─────────┼──────┼──────┼──────
 configs │  164 │  164 │  0   
 entries │ 3665 │ 3665 │  0

APK

   compressed    │  uncompressed   │                                           
──────────┬──────┼──────────┬──────┤                                           
 size     │ diff │ size     │ diff │ path                                      
──────────┼──────┼──────────┼──────┼───────────────────────────────────────────
 29.2 KiB │ +5 B │ 64.6 KiB │  0 B │ ∆ META-INF/CERT.SF                        
    271 B │ -1 B │    120 B │  0 B │ ∆ META-INF/version-control-info.textproto 
  1.2 KiB │ -1 B │  1.2 KiB │  0 B │ ∆ META-INF/CERT.RSA                       
──────────┼──────┼──────────┼──────┼───────────────────────────────────────────
 30.6 KiB │ +3 B │   66 KiB │  0 B │ (total)