Minor fixes following up Temporal refactor (#18139)

Fixes twentyhq/core-team-issues#2034

Author: lucasbordeau

packages/twenty-front/src/modules/object-record/object-filter-dropdown/utils/getRelativeDateDisplayValue.ts

@@ -29,7 +29,7 @@ export const getRelativeDateDisplayValue = (
     const timeZoneAbbreviation =
       getRelativeDateFilterTimeZoneAbbreviation(relativeDate);
 
-    unitFormatted = `${unitFormatted ?? ''} ${shouldDisplayTimeZoneAbbreviation ? `(${timeZoneAbbreviation})` : ''}`;
+    unitFormatted = `${unitFormatted ?? ''}${shouldDisplayTimeZoneAbbreviation ? ` (${timeZoneAbbreviation})` : ''}`;
   }
 
   return [directionFormatted, amountFormatted, unitFormatted]

packages/twenty-front/src/modules/ui/input/components/internal/date/components/DateTimePicker.tsx

@@ -451,9 +451,12 @@ export const DateTimePicker = ({
     ? highlightedDates.map((plainDate) => {
         const date = new Date();
 
-        date.setDate(plainDate.day);
-        date.setMonth(plainDate.month - 1);
+        date.setDate(1);
+
         date.setFullYear(plainDate.year);
+        date.setMonth(plainDate.month - 1);
+
+        date.setDate(plainDate.day);
 
         return date;
       })