[BUG] Confirmation message is incorrect if "closeProtection" is enabled.

[yanniel]

• I have verified that the issue occurs with the latest twilio.js release and is not marked as a known issue in the CHANGELOG.md.
• I reviewed the Common Issues and open GitHub issues and verified that this report represents a potentially new issue.
• I verified that the Quickstart application works in my environment.
• I am not sharing any Personally Identifiable Information (PII)
  or sensitive account information (API keys, credentials, etc.) when reporting this issue.

Code to reproduce the issue:

    const voiceClient = new Device(twilioAccessToken, {
      closeProtection: true,
    });

Expected behavior:

The confirmation message should be: "A call is currently in-progress. Leaving or reloading this page will end the call."

Actual behavior:

The confirmation message that's displayed is "Changes you made may not be saved."

Software versions:

• Browser(s): Google Chrome. Version 121.0.6167.160 (Official Build) (arm64)
• Operating System: macOS Sonoma 14.3
• twilio.js: 2.10.1
• Third-party libraries (e.g., Angular, React, etc.): "react": "^17.0.2",

[AshmitGupta]

I am a new contributor. Can I start working on a fix for this?

[charliesantos]

@AshmitGupta you sure can! Please submit a PR if you have time and we'll review it.