fix(orm): use mapped type instead of Capitalize for ExtResultBase model keys

Iterate over GetModels<Schema> directly and remap keys with Uncapitalize,
instead of Uncapitalizing first and round-tripping with Capitalize. This
fixes breakage when model names start with a lowercase letter, since
Uncapitalize followed by Capitalize is not lossless (e.g. myModel ->
myModel -> MyModel, which no longer matches the schema key).

Author: genu

packages/orm/src/client/plugin.ts

@@ -41,10 +41,10 @@ export type ExtResultFieldDef<Needs extends Record<string, true> = Record<string
  * `needs` keys are constrained to non-relation fields of the corresponding model.
  */
 export type ExtResultBase<Schema extends SchemaDef = SchemaDef> = {
-    [M in Uncapitalize<GetModels<Schema>>]?: Record<
+    [M in GetModels<Schema> as Uncapitalize<M>]?: Record<
         string,
         {
-            needs: Partial<Record<NonRelationFields<Schema, Capitalize<M> & GetModels<Schema>>, true>>;
+            needs: Partial<Record<NonRelationFields<Schema, M>, true>>;
             compute: (...args: any[]) => any;
         }
     >;