Fix calendar rrule until where event is fullday but rrule until has a non-0 time (#3782)

This fixes #3781 

tests supplied

see
https://forum.magicmirror.builders/topic/19637/issue-with-outlook-recurring-events

tests/configs/modules/calendar/fullday_until.js

@@ -0,0 +1,27 @@
+let config = {
+	address: "0.0.0.0",
+	ipWhitelist: [],
+	timeFormat: 12,
+
+	modules: [
+		{
+			module: "calendar",
+			position: "bottom_bar",
+			config: {
+				hideDuplicates: false,
+				maximumEntries: 100,
+				calendars: [
+					{
+						maximumEntries: 100,
+						url: "http://localhost:8080/tests/mocks/fullday_until.ics"
+					}
+				]
+			}
+		}
+	]
+};
+
+/*************** DO NOT EDIT THE LINE BELOW ***************/
+if (typeof module !== "undefined") {
+	module.exports = config;
+}