refactor: simplify custom field shape

apps/server/src/utils/__tests__/parser.test.ts

@@ -883,16 +883,16 @@ describe('parseExcel()', () => {
         skip: false,
         note: 'Ballyhoo',
         custom: {
-          user0: { value: 'a0' },
-          user1: { value: 'a1' },
-          user2: { value: 'a2' },
-          user3: { value: 'a3' },
-          user4: { value: 'a4' },
-          user5: { value: 'a5' },
-          user6: { value: 'a6' },
-          user7: { value: 'a7' },
-          user8: { value: 'a8' },
-          user9: { value: 'a9' },
+          user0: 'a0',
+          user1: 'a1',
+          user2: 'a2',
+          user3: 'a3',
+          user4: 'a4',
+          user5: 'a5',
+          user6: 'a6',
+          user7: 'a7',
+          user8: 'a8',
+          user9: 'a9',
         },
         colour: 'red',
         type: 'event',
@@ -908,8 +908,8 @@ describe('parseExcel()', () => {
         skip: true,
         note: 'Rainbow chase',
         custom: {
-          user0: { value: 'b0' },
-          user5: { value: 'b5' },
+          user0: 'b0',
+          user5: 'b5',
         },
         colour: '#F00',
         type: 'event',