refactor(schedule): make absolute times explicit

apps/web/tests/snapshots/schedule-after/at-conversation.expected.md

@@ -0,0 +1,6 @@
+- paragraph: "Reminder: Review the release window."
+- button "Copy":
+  - img
+- button "Branch into a new conversation":
+  - img
+- text: {{clock}} Ran for {{duration}}

apps/web/tests/snapshots/schedule-after/at-receipt.expected.md

@@ -1,6 +0,0 @@
-- note:
-  - banner: Scheduled reminder Delivered in this session only
-  - paragraph: Review the release window
-  - contentinfo:
-    - text: ID {{scheduleId}}
-    - time: Due at {{occurrenceAt}}