fix(plugin-meetings): turn on caption without turning on transcribing

[mkesavan13]

COMPLETES Ad-hoc PR

This pull request addresses

On the Locus, a toggle change has affected how we use captions.

Earlier, we used to request for transcribing which turns on the WxA and then we request for Closed Captions. Now, when we try this, Locus fails the request for transcirbing and the SDK doesn't move-on to turn on captions.

by making the following changes

Instead of toggleTranscribing, we directly do turnOnCaptions now.

Note: Now that we toggle captions directly, to use the CC, we need to have supportSeparatedClosedCaption toggle turned on in the CH

Change Type

• [x] 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)
• [ ] Documentation update
• [ ] Tooling change
• [ ] Internal code refactor

The following scenarios were tested

• Manually tested captions by speaking out to generate
• Tried setting Spoken Language and Caption Languages

I certified that

• [x] I have read and followed contributing guidelines

• [x] I discussed changes with code owners prior to submitting this pull request

• [x] I have not skipped any automated checks

• [x] All existing and new tests passed

• [x] I have updated the documentation accordingly

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