Follow-up high fixes on date refactor (#15553)

This PR fixes important bugs on date filter handling following-up date
refactor.

Fixes : https://github.com/twentyhq/core-team-issues/issues/1814

packages/twenty-shared/src/utils/filter/dates/utils/getStartUnitOfDateTime.ts

@@ -18,6 +18,14 @@ export const getStartUnitOfDateTime = (
         const firstDayOfTheWeekAsDateFNSNumber =
           getFirstDayOfTheWeekAsANumberForDateFNS(firstDayOfTheWeek);
 
+        console.log({
+          firstDayOfTheWeek,
+          firstDayOfTheWeekAsDateFNSNumber,
+          startOfWekk: startOfWeek(dateTime, {
+            weekStartsOn: firstDayOfTheWeekAsDateFNSNumber,
+          }),
+        });
+
         return startOfWeek(dateTime, {
           weekStartsOn: firstDayOfTheWeekAsDateFNSNumber,
         });

packages/twenty-shared/src/utils/filter/dates/utils/relativeDateFilterSchema.ts

@@ -11,7 +11,6 @@ export const relativeDateFilterSchema = z
     amount: relativeDateFilterAmountSchema.nullish(),
     unit: relativeDateFilterUnitSchema,
     timezone: z.string().nullish(),
-    referenceDayAsString: z.string().nullish(),
     firstDayOfTheWeek: firstDayOfWeekSchema.nullish(),
   })
   .refine((data) => !(data.amount === undefined && data.direction !== 'THIS'), {

packages/twenty-shared/src/utils/filter/dates/utils/relativeDateFilterStringifiedSchema.ts

@@ -3,7 +3,7 @@ import { isNonEmptyArray } from '@sniptt/guards';
 import z from 'zod';
 
 const REGEX_FOR_RELATIVE_DATE_FILTER_STRINGIFIED_PARSING =
-  /((?:THIS)|(?:PAST)|(?:NEXT))_(\d*)_(DAY|MONTH|YEAR|WEEK)(?:(?:;;([^;;]*);;)?(?:(\d\d\d\d-\d\d-\d\d);;)?(?:(MONDAY|SUNDAY|SATURDAY);;)?)?/;
+  /((?:THIS)|(?:PAST)|(?:NEXT))_(\d*)_(DAY|MONTH|YEAR|WEEK)(?:(?:;;([^;;]*);;)?(?:(MONDAY|SUNDAY|SATURDAY);;)?)?/;
 
 export const relativeDateFilterStringifiedSchema = z
   .string()
@@ -18,22 +18,13 @@ export const relativeDateFilterStringifiedSchema = z
       throw new Error(`Cannot parse stringified relative date filter`);
     }
 
-    const [
-      _,
-      direction,
-      amount,
-      unit,
-      timezone,
-      referenceDayAsString,
-      firstDayOfTheWeek,
-    ] = result;
+    const [_, direction, amount, unit, timezone, firstDayOfTheWeek] = result;
 
     return relativeDateFilterSchema.parse({
       direction,
       amount,
       unit,
       timezone,
-      referenceDayAsString,
       firstDayOfTheWeek,
     });
   });