Update channels.md

[igor-petruk]

Adding speaker notes explaining why send and recv can fail.

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Latest commit: a12dbcd7efe3e3c6001d957996a39bd0788fb336

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🟥 Failed Commands
lerna run build --ignore @pankod/refine-react-router --scope @pankod/refine* --scope create-refine-app --scope * --ignore blog-sveltekit-crud --ignore blog-react-aria
lerna run build --ignore @pankod/refine-react-router --scope @pankod/refine* --scope create-refine-app --scope * --ignore blog-sveltekit-crud --ignore blog-react-aria
lerna run build --ignore @pankod/refine-react-router --scope @pankod/refine* --scope create-refine-app --scope * --ignore blog-sveltekit-crud --ignore blog-react-aria

✅ Successfully ran 3 targets

• lerna run test --stream --scope @pankod/refine* --scope create-refine-app
• lerna run test --stream --scope @pankod/refine* --scope create-refine-app
• lerna run test --stream --scope @pankod/refine* --scope create-refine-app

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