[VBLOCKS-2900] Remove CallMessage type enums

[mhuynh5757]

Submission Checklist

• [x] Updated the CHANGELOG.md to reflect any feature, bug fixes, or known issues made in the source code
• [x] Tested code changes and observed expected behavior in the example app
• [x] Performed a visual inspection of the Files changed tab prior to submitting the pull request for review to ensure proper usage of the style guide

All third-party contributors acknowledge that any contributions they provide will be made under the same open-source license that the open-source project is provided under.

• [x] I acknowledge that all my contributions will be made under the project's license.

Description

This PR removes the CallMessage type (contentType and messageType) enums from the SDK. This PR also upgrades the native SDK version dependencies.

Breakdown

• Remove CallMessage type enums from the Android and iOS layer
• Remove enums from the JS layer and fix unit tests

Validation

• Unit tests show no regression
• Manual testing on Android and iOS

Additional Notes

N/A

[dipankadas]

@mhuynh5757

1. The iOS SDK says Currently the only supported type is "application/json", which is also the default value. Are we enforcing this in RN SDK (If no string is provided, the set it to "application/json")?
2. Also we have this in the iOS CL, To send a user defined message with the [TVOCall sendMessage:] or the [TVOCallInvite sendMessage:] method, set the "messageType" to "user-defined-message". Can we add the same here?

[mhuynh5757]

I'll add the docstring requested changes, but I think long term we should just link to a Twilio Docs page that includes this information: https://twilio-engineering.atlassian.net/browse/VBLOCKS-3130?atlOrigin=eyJpIjoiMjM0MWVlMDJjNjBlNDBhZmEzZmVlOGE4YWEyZGIwYTgiLCJwIjoiaiJ9