fix: optin to websockets for the mediator live mode as an experiment,…

[elribonazo]

Description:

Disabling mediator live mode by default and enabling it as an optional experiment developers must opt-in, VS being enabled by default

Checklist:

• [x] My PR follows the contribution guidelines of this project
• [x] My PR is free of third-party dependencies that don't comply with the Allowlist
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked the PR title to follow the conventional commit specification

[github-actions[bot]]

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JUnit

Tests	Skipped	Failures	Errors	Time
413	2 :zzz:	0 :x:	0 :fire:	1m 1s :stopwatch: