Call-swarm: Joining in audio make the host join

Scenario

• Alice, Bob in a swarm
• Alice is default host
• Bob joins in audio

Expected

Alice doesn't join the call

Current

Alice is attached

added media swarm bug labels

marked this issue as blocking #953

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assigned to @sblin

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closed

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mentioned in commit 12f0bf8f

mentioned in commit 089a2206

mentioned in commit b0fdb4b7

mentioned in commit aa24a6db