BUG: read auth annotation from GraphQL type, not from Prisma model

This brings the list constraint logic in line with how other middleware work.
This is important e.g. for union types which do not exist in Prisma model

src/select.ts

@@ -205,7 +205,12 @@ export class PrismaSelect {
        * @NOTE-DP: root level `where` clause. Only for lists
        */
       if (isRootList) {
-        const where = getListWhereConstrains(modelName, model?.documentation, this.options, this.context)
+        const where = getListWhereConstrains(
+          modelName,
+          this.info.schema.getType(modelName)?.description || '',
+          this.options,
+          this.context
+        )
         if (where) {
           filteredObject.where = where
         }
@@ -231,7 +236,7 @@ export class PrismaSelect {
               if (field.isList) {
                 const where = getListWhereConstrains(
                   field.type,
-                  this.model(field.type)?.documentation,
+                  this.info.schema.getType(field.type)?.description || '',
                   this.options,
                   this.context
                 )