fix: end date picker allows to select invalid value (#21)

## Description

- Fixed possibility of inputting start date bigger than the end date
- Fixed the ability to inputting end date on create ticket category

Closes: BON-754

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app/creator/create/BondscapeDateTimePicker/BondscapeDateTimePicker.tsx

@@ -1,7 +1,7 @@
-import React, { useState } from "react";
-import "./style.css";
 import { DatePicker } from "antd";
 import dayjs from "dayjs";
+import React, { useState } from "react";
+import "./style.css";
 
 interface Props {
   readonly startLabel?: string;
@@ -64,7 +64,7 @@ const BondscapeDateTimePicker = ({
             value={initialStartValue ? dayjs(initialStartValue) : undefined}
             disabledDate={
               maxDate
-                ? (current) => current < maxDate
+                ? (current) => current > maxDate
                 : (current) => current < dayjs()
             }
             onChange={(date) => {

app/creator/create/[[...id]]/CreateTicketCategory.tsx

@@ -192,7 +192,7 @@ const CreateTicketCategory = ({
                           setFieldValue("availableFrom", value)
                         }
                         onChangeEnd={(value) =>
-                          setFieldValue("availableTill", value)
+                          setFieldValue("availableUntil", value)
                         }
                       />
                       <div className="flex flex-col bg-bondscape-text_neutral_100 rounded-[16px] gap-[0.75rem] py-[16px]">