fix widget color bar: use explicit height sized to content

app/src/main/java/space/darkest/nova/android/widget/AgendaWidget.kt

@@ -217,10 +217,11 @@ class AgendaWidget : GlanceAppWidget() {
 
             Spacer(GlanceModifier.width(8.dp))
 
-            // color indicator - height adapts to content via the row
+            // color indicator
+            val barHeight = if (event.location != null || !event.allDay) 32.dp else 18.dp
             Box(
                 modifier = GlanceModifier
-                    .width(3.dp)
+                    .size(width = 3.dp, height = barHeight)
                     .cornerRadius(2.dp)
                     .background(GlanceTheme.colors.primary),
             ) {}