feat(auth): add web captcha handling

- replace manual captcha screen with WebView-based VK captcha flow
- handle captcha error 14 by showing the captcha overlay and retrying with success_token
- pass captcha redirect/result state through AppSettings
- remove old captcha ViewModel, navigation, validation, and DI
- add ACRA crash reporting
- add WIP message edit mode UI/state
- update Gradle wrapper, SDK config, and dependencies

core/ui/src/main/res/values/strings.xml

@@ -303,4 +303,6 @@
 
     <string name="confirm_chat_create_with_title">Are you sure you want to create chat «%s»?</string>
     <string name="confirm_chat_create_empty_with_title">Are you sure you want to create chat «%s» only with yourself?</string>
+
+    <string name="title_edit_message">Edit message</string>
 </resources>