listChannels resolves a joined team by exact display name or ID, follows
Microsoft Graph pagination, and returns its channels.
Example
automations/list-team-channels.automation.ts
Inputs
Output
Returns channels withchannelId, displayName, isArchived (default false),
and optional createdAt, description, email, membershipType, and webUrl.
Exact name lookup ignores case and whitespace and fails on missing or ambiguous
matches; IDs avoid that lookup.