Support optional list with nullable items

This prevents null for the overall list property but allows nulls in the list
```ts
Array<T | null> | undefined
```

This corrects the `scheduleStatus` field which previously allowed the value to be null despite missing that type

Author: CarsonF

src/common/optional-field.ts

@@ -42,8 +42,11 @@ export function OptionalField(...args: any) {
     typeof args[0] === 'function' ? (args[0] as () => any) : undefined;
   const options: OptionalFieldOptions =
     (typeof args[0] === 'function' ? args[1] : args[0]) ?? {};
-  const nilIn = options.nullable ?? options.optional ?? true;
-  const nullOut = !!options.nullable;
+  const nilIn =
+    options.nullable === 'items' && options.optional
+      ? 'itemsAndList'
+      : options.nullable ?? options.optional ?? true;
+  const nullOut = !!options.nullable && options.nullable !== 'items';
   const schemaOptions = {
     ...options,
     nullable: nilIn,

src/components/progress-summary/dto/progress-summary-filters.dto.ts

@@ -6,7 +6,8 @@ import { ScheduleStatus } from './schedule-status.enum';
 @InputType()
 export abstract class ProgressSummaryFilters {
   @ListField(() => ScheduleStatus, {
-    nullable: 'itemsAndList',
+    optional: true,
+    nullable: 'items',
     description: stripIndent`
       Filter by schedule status.
       - \`[X, Y]\` will allow summaries with either X or Y status.