fix: optimize findFirst (#229)

Update packages/runtime/src/client/crud/operations/find.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: svetch

packages/runtime/src/client/crud/operations/find.ts

@@ -8,15 +8,19 @@ export class FindOperationHandler<Schema extends SchemaDef> extends BaseOperatio
         const normalizedArgs = this.normalizeArgs(args);
 
         // parse args
-        const parsedArgs = validateArgs
+        const parsedArgs = (validateArgs
             ? this.inputValidator.validateFindArgs(this.model, operation === 'findUnique', normalizedArgs)
-            : normalizedArgs;
+            : normalizedArgs) as FindArgs<Schema, GetModels<Schema>, true>;
+
+        if (operation === 'findFirst') {
+            parsedArgs.take = 1;
+        }
 
         // run query
         const result = await this.read(
             this.client.$qb,
             this.model,
-            parsedArgs as FindArgs<Schema, GetModels<Schema>, true>,
+            parsedArgs,
         );
 
         const finalResult = operation === 'findMany' ? result : (result[0] ?? null);