fix(channels): auto-approved channel does not appear in the suggesting tab until the next list refresh #232

Relates to #196, #153

Problem

With channelProposals.autoApprove on (#196), a suggested channel is approved at once. The suggesting tab, however, only updates its status line ("… is already shared with everyone.") and does not refresh its channel list.

• onApproved, which runs loadChannels(true), is called only from the admin decision path, not from the suggest poller.
• So the auto-approved channel shows up in that tab only at the next list refresh. The proposals E2E checks it on a second page after a reload.

Found in the #153 review. It is not a regression: nothing is refreshed, so an open PSK conversation is not at risk.

Proposed fix

When the suggest poller sees the status approved, call the same onApproved path. With #153 merged, loadChannels() keeps client-only state across the refresh.

Acceptance

• With auto-approve on, the suggested channel appears in the suggesting tab's list without a reload.
• An open PSK conversation and the unread counts survive that refresh.
• A unit test for the poller's approved path, and an E2E step in the proposals test that checks the same page.