[Identity] Reset scanner state when disposed

[ccen-stripe]

Summary

Add a function to reset scanner state to Initializing when the compose view is disposed.

Motivation

This ensures the view would restart from a fresh state and avoid a crash when selfie is retried.

Testing

• Added tests
• Modified tests
• Manually verified

Screenshots

Before	After
before screenshot	after screenshot

Changelog

[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 │   1.9 MiB │   1.9 MiB │  +9 B │     4 MiB │     4 MiB │ +124 B 
     arsc │   1.4 MiB │   1.4 MiB │   0 B │   1.4 MiB │   1.4 MiB │    0 B 
 manifest │   2.3 KiB │   2.3 KiB │   0 B │   8.1 KiB │   8.1 KiB │    0 B 
      res │ 353.2 KiB │ 353.2 KiB │   0 B │ 485.2 KiB │ 485.2 KiB │    0 B 
   native │   6.2 MiB │   6.2 MiB │   0 B │  15.8 MiB │  15.8 MiB │    0 B 
    asset │  67.7 KiB │  67.7 KiB │   0 B │  87.7 KiB │  87.7 KiB │    0 B 
    other │ 113.4 KiB │ 113.4 KiB │  +2 B │ 261.2 KiB │ 261.2 KiB │    0 B 
──────────┼───────────┼───────────┼───────┼───────────┼───────────┼────────
    total │    10 MiB │    10 MiB │ +11 B │  21.9 MiB │  21.9 MiB │ +124 B 

 DEX     │ old   │ new   │ diff      
─────────┼───────┼───────┼───────────
   files │     1 │     1 │ 0         
 strings │ 20254 │ 20254 │ 0 (+1 -1) 
   types │  6302 │  6302 │ 0 (+0 -0) 
 classes │  5158 │  5158 │ 0 (+0 -0) 
 methods │ 29628 │ 29628 │ 0 (+0 -0) 
  fields │ 17240 │ 17240 │ 0 (+0 -0) 

 ARSC    │ old  │ new  │ diff 
─────────┼──────┼──────┼──────
 configs │  261 │  261 │  0   
 entries │ 5190 │ 5190 │  0

APK

    compressed    │    uncompressed    │                        
──────────┬───────┼───────────┬────────┤                        
 size     │ diff  │ size      │ diff   │ path                   
──────────┼───────┼───────────┼────────┼────────────────────────
  1.9 MiB │  +9 B │     4 MiB │ +124 B │ ∆ classes.dex          
 49.7 KiB │  +3 B │ 113.5 KiB │    0 B │ ∆ META-INF/CERT.SF     
 31.4 KiB │  -2 B │ 113.4 KiB │    0 B │ ∆ META-INF/MANIFEST.MF 
  1.2 KiB │  +1 B │   1.2 KiB │    0 B │ ∆ META-INF/CERT.RSA    
──────────┼───────┼───────────┼────────┼────────────────────────
    2 MiB │ +11 B │   4.2 MiB │ +124 B │ (total)

DEX

STRINGS:

   old   │ new   │ diff      
  ───────┼───────┼───────────
   20254 │ 20254 │ 0 (+1 -1) 
  + ~~R8{backend:dex,compilation-mode:release,has-checksums:false,min-api:21,pg-map-id:05ef1b5,r8-mode:full,version:8.2.33}
  
  - ~~R8{backend:dex,compilation-mode:release,has-checksums:false,min-api:21,pg-map-id:befbfa8,r8-mode:full,version:8.2.33}

[ccen-stripe]

@stripe/stripe-identity-observers