GridCommands: fix selectByIndex schema

Author: anna-shakhova

packages/devextreme/js/__internal/grids/grid_core/ai_assistant/commands/__tests__/selection.test.ts

@@ -276,6 +276,10 @@ describe('selectByIndexesCommand', () => {
       expect(selectByIndexesCommand.schema.safeParse({}).success).toBe(false);
     });
 
+    it('rejects when indexes is an empty array', () => {
+      expect(selectByIndexesCommand.schema.safeParse({ indexes: [] }).success).toBe(false);
+    });
+
     it('rejects negative indexes', () => {
       expect(selectByIndexesCommand.schema.safeParse({ indexes: [-1] }).success).toBe(false);
     });

packages/devextreme/js/__internal/grids/grid_core/ai_assistant/commands/selection.ts

@@ -43,7 +43,7 @@ export const selectByKeysCommand = defineGridCommand({
 
 const selectByIndexesCommandSchema = z.object({
   // eslint-disable-next-line spellcheck/spell-checker
-  indexes: z.array(z.number().int().nonnegative()),
+  indexes: z.array(z.number().int().nonnegative()).min(1),
 }).strict();
 
 export const selectByIndexesCommand = defineGridCommand({