feat(usage): add live end time option for custom date range (#4438)

* add glm-5.2 pricing

* feat(usage): add live end time option for custom date range

Add a "End time follows current time" checkbox in the custom date range
picker. When enabled, the end time becomes read-only and automatically
tracks the current moment, so usage data always reflects up-to-the-second
consumption from the chosen start time.

This is especially useful under the Coding Plan 5-hour quota window —
users can set the start time to when their 5h window began and keep
the end time live to monitor real-time token consumption.

* style(usage): fix prettier formatting for UsageDashboard

* fix(usage): include liveEndTime in React Query cache keys

Without liveEndTime in the query key, a live custom range and a fixed
custom range with the same stored endpoints share the same cache entry.
After the live range refreshes (endDate = now), switching to the fixed
range shows stale data fetched through "now" instead of the original
end time.

src/i18n/locales/en.json

@@ -1473,6 +1473,8 @@
     "customRangeHint": "Supports both date and time",
     "startTime": "Start Time",
     "endTime": "End Time",
+    "liveEndTime": "End time follows current time",
+    "liveEndTimeNow": "Now",
     "input": "Input",
     "output": "Output",
     "cacheWrite": "Creation",