fix(plugin-meetings): do not fallback on reachability stop call

[k-wasniowski]

COMPLETES #SPARK-661187

This pull request addresses

Sometimes when no media clusters were reached, and stopReachability was called it actually won't stop doing reachability checks if min number of clusters were provided.

It will do a fallback, and keep trying to fetch reachable clusters.

Fix it in the way, to stop fallbacking on reachability stop request.

by making the following changes

Ensure that we don't fallback on resolveReachabilityPromise.

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 were tested

Tested with JS-SDK sample app, and added unit test

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• This PR is related to
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📝 Walkthrough

Walkthrough

The change updates the stopReachability method in the Reachability class by modifying the call to resolveReachabilityPromise to explicitly pass false, disabling the check for minimum required clusters and preventing fallback reachability gathering when stopping reachability. A new unit test was added to verify that when stopReachability is called after gatherReachability starts with clusters that have empty protocol arrays and a minimum cluster count specified, the fallback mechanism is not triggered. The test confirms the correct events are emitted, aborts are called, and fallback logic is avoided.

Possibly related PRs

• fix(plugin-meetings): stop reachability when joining a meeting #4141: Introduced the stopReachability method and its integration into the meeting flow, which is directly refined by the current PR's changes to the method's internal logic.

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