[Feat][SDK-348] Add uncaught exception to payload

[christianbuon]

Description of the change

• Add is_uncaught field to the payload, so that the frontend differentiate between errors not caught by the user

New Payload example:

{
  "body": {
    "message": {
      "body": "An error caught by user"
    }
  },
  "is_uncaught": false,
  "uuid": "4f12a62118004563932257b40e9beed7",
  "language": "java",
  "level": "error",
  "timestamp": 1724033268,
  "environment": "production",
  "framework": "android",
  "client": {
    "name_version": "1.0",
    "timestamp": 1724033255,
    "code_version": 1,
    "version_code": 1,
    "user_ip": "123.456.789.123",
    "version_name": "1.0",
    "android": {
      "phone_model": "sdk_gphone64_arm64",
      "version_name": "1.0",
      "android_version": "14",
      "version_code": 1,
      "code_version": "1.0"
    }
  },
  "platform": "android",
  "notifier": {
    "version": "1.10.2-SNAPSHOT",
    "name": "rollbar-android"
  },
  "retentionDays": 180,
  "metadata": {
    "customer_timestamp": 1724033255.191
  }
}

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Maintenance
• New release

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers assigned
• Issue from task tracker has a link to this pull request
• Changes have been reviewed by at least one other engineer