fix(meetings): added reachability trigger to metrics

[marcin-bazyl]

COMPLETES #SPARK-562699

This pull request addresses

We've recently added information about timings for IP network version checks to "js_sdk_reachability_completed" metric, but reachability is triggered from various places, one of them being reconnection. We want to know the timings just from reachability that's called during webex.meetings.register() and not from reconnection.

by making the following changes

added reachability trigger information to the "js_sdk_reachability_completed" metric

Change Type

• 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 where tested

unit tests

I certified that

• I have read and followed contributing guidelines

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

• I have not skipped any automated checks

• All existing and new tests passed

• I have updated the documentation accordingly

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