feat: make Following a changed-first inbox (Closes #1297)

tests/e2e/test_mobile_following_release.py

@@ -23,12 +23,13 @@ def test_following_queue_is_phone_usable_at_narrow_viewport():
         row = page.locator('[data-mobile-queue="following"]')
         expect(row).to_have_count(1)
         page.locator("#following-list").evaluate("""node => {
-          node.innerHTML = '<button class="following-card" type="button"><span><strong>Quiet issue with a long mobile title</strong><small>stackchain/api #42 · open · just now</small></span><span aria-hidden="true">›</span></button>';
+          node.innerHTML = '<button class="following-card has-unseen-change" type="button"><span><em>New activity</em><strong>Changed issue with a long mobile title</strong><small>stackchain/api #42 · open · just now</small></span><span aria-hidden="true">›</span></button>';
         }""")
         page.locator("#following-sheet").evaluate("node => node.showModal()")
 
         expect(page.locator("#following-sheet")).to_be_visible()
         expect(page.locator(".following-card")).to_be_visible()
+        expect(page.locator(".following-card")).to_contain_text("New activity")
         assert page.locator(".following-card").bounding_box()["height"] >= 44
         assert page.locator("#close-following").bounding_box()["height"] >= 44
         overflow = page.evaluate("document.documentElement.scrollWidth > document.documentElement.clientWidth")