chore: fixes test suites that use clearAndSeedEverything (#4080)

test/fields/collections/JSON/shared.ts

@@ -0,0 +1,11 @@
+import type { JsonField } from '../../payload-types'
+
+export const jsonDoc: Partial<JsonField> = {
+  json: {
+    arr: ['val1', 'val2', 'val3'],
+    nested: {
+      value: 'nested value',
+    },
+    property: 'value',
+  },
+}