feat(editor): Handle pin data edge cases and unify validation (no-changelog) (#6685)

Github issue / Community forum post (link here to close automatically):

packages/editor-ui/src/shims.d.ts

@@ -13,6 +13,7 @@ declare global {
 			PROD: boolean;
 			NODE_ENV: 'development' | 'production';
 			VUE_APP_URL_BASE_API: string;
+			VUE_APP_MAX_PINNED_DATA_SIZE: string;
 		};
 	}