DEVX-5446 Making amendments to force mute feature to disable mute state

[superchilled]

Description

Updates the force mute feature, to set the force_mute_all method to have active set to true by default (in order to mute all future streams) and to add an additional method disable_force_mute, which sets active to false in order to disable the mute state of the session (so that future streams are not automatically muted).

Motivation and Context

It implements a feature in the SDK which has already been added to the API. The main elements of the feature were added in #233, but this PR makes amendments to the feature to bring it in line with the actual API (some aspects of the previous implementation were erroneous due to and inaccuracies in the documentation).

How Has This Been Tested?

Example Output or Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.