fix(sdk): handle WebView render process crash

[CAMOBAP]

Fixes #214

WebViewClient.onRenderProcessGone was not overridden, so a renderer death killed the host app. Mirrors the iOS SDK, which surfaces the generic error from webViewWebContentProcessDidTerminate rather than adding a dedicated one — no new public API.

Reproduced on an API 35 emulator with Page.crash over CDP, while the checkbox was shown:

	Before	After
Host app	Process com.hcaptcha.example (pid 31982) has died	survives
chromium	[FATAL:crashpad_client_linux.cc:744] Render process (32123)'s crash wasn't handled by all associated webviews, triggering application crash.	—
Listener	never called	hCaptcha failed: WebView render process did terminate(29)

[github-actions]

Diffuse report:

OLD: sdk-main.aar
NEW: sdk-pr.aar

 AAR      │ old       │ new       │ diff   
──────────┼───────────┼───────────┼────────
      jar │  98.8 KiB │    99 KiB │ +205 B 
 manifest │     411 B │     411 B │    0 B 
      res │  28.3 KiB │  28.3 KiB │    0 B 
    other │     1 KiB │     1 KiB │    0 B 
──────────┼───────────┼───────────┼────────
    total │ 128.5 KiB │ 128.7 KiB │ +205 B 

 JAR     │ old │ new │ diff       
─────────┼─────┼─────┼────────────
 classes │  62 │  62 │  0 (+0 -0) 
 methods │ 835 │ 838 │ +3 (+5 -2) 
  fields │ 287 │ 287 │  0 (+0 -0)

AAR

 size   │ diff   │ path          
────────┼────────┼───────────────
 99 KiB │ +205 B │ ∆ classes.jar 
────────┼────────┼───────────────
 99 KiB │ +205 B │ (total)

JAR

METHODS:

   old │ new │ diff       
  ─────┼─────┼────────────
   835 │ 838 │ +3 (+5 -2) 
  
  + com.hcaptcha.sdk.HCaptchaWebViewHelper access_200(HCaptchaWebViewHelper) → IHCaptchaVerifier
  + com.hcaptcha.sdk.HCaptchaWebViewHelper access_300(HCaptchaWebViewHelper) → HCaptchaWebView
  + com.hcaptcha.sdk.HCaptchaWebViewHelper_HCaptchaWebClient onRenderProcessGone(WebView, RenderProcessGoneDetail) → boolean
  + android.webkit.RenderProcessGoneDetail didCrash() → boolean
  + java.lang.StringBuilder append(boolean) → StringBuilder
  
  - com.hcaptcha.sdk.HCaptchaWebViewHelper access_200(HCaptchaWebViewHelper) → HCaptchaWebView
  - com.hcaptcha.sdk.HCaptchaWebViewHelper access_300(HCaptchaWebViewHelper) → IHCaptchaVerifier

[github-actions]

Benchmark report:

Test name	Time ms. (median)	Allocations (median)
com.hcaptcha.sdk.HCaptchaBenchmarkTest.EMULATOR_UNLOCKED_benchmarkInvisibleVerification	+415.66	+26
com.hcaptcha.sdk.HCaptchaBenchmarkTest.EMULATOR_UNLOCKED_benchmarkInvisibleVerificationColdRun	+491.19	+551
com.hcaptcha.sdk.HCaptchaBenchmarkTest.EMULATOR_UNLOCKED_benchmarkInvisibleSetup	-1.00	+515
com.hcaptcha.sdk.HCaptchaDebugInfoTest.EMULATOR_UNLOCKED_benchmarkDebugInfo	-14.82	-5571
com.hcaptcha.sdk.HCaptchaDebugInfoTest.EMULATOR_UNLOCKED_benchmarkDebugSys	+23.95	+2