CRNS-311: Handling channel.deleted event

[vishalnarkhede]

CLA

• I have signed the Stream CLA (required).
• Code changes are tested

Description of the changes, What, Why and How?

Delete event for channel is not currently handled by our js client. So adding the event handler for it.

Changelog

• Remove the channel from activeChannels list, once the channel is deleted.

[github-actions]

Size Change: +300 B (0%)

Total Size: 241 kB

Filename	Size	Change
dist/browser.es.js	52.7 kB	+70 B (0%)
dist/browser.full-bundle.min.js	29.4 kB	+40 B (0%)
dist/browser.js	53.2 kB	+60 B (0%)
dist/index.es.js	52.7 kB	+70 B (0%)
dist/index.js	53.3 kB	+60 B (0%)

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