🐛 Fix calendar sizing (#852)

src/widgets/calendar/bg-calculator.ts

@@ -0,0 +1,16 @@
+import { ColorScheme, useMantineTheme } from '@mantine/core';
+import { isToday } from '../../tools/shared/time/date.tool';
+
+export const getBgColorByDateAndTheme = (colorScheme: ColorScheme, date: Date) => {
+  if (!isToday(date)) {
+    return undefined;
+  }
+
+  const { colors } = useMantineTheme();
+
+  if (colorScheme === 'dark') {
+    return colors.dark[5];
+  }
+
+  return colors.gray[2];
+};