Add time range buttons (1H/6H/24H) to flow rate popup

Replace static tag-history binding with expression binding using
runScript to call flowrate.queryHistory(), which dynamically queries
tag history based on the selected time range. Buttons highlight
blue when active, grey when inactive.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

projects/watermeter/ignition/script-python/flowrate/code.py

@@ -0,0 +1,14 @@
+def queryHistory(timeHours):
+	from java.util import Date
+	
+	end = Date()
+	start = Date(end.getTime() - long(timeHours * 3600000))
+	
+	return system.tag.queryTagHistory(
+		paths=["[CoreDB/ignition-ignition:default]watermeter/prefilterflowrate"],
+		startDate=start,
+		endDate=end,
+		returnSize=120,
+		aggregationMode="Average",
+		returnFormat="Wide"
+	)