ui: exclude generated build dirs from prettier and eslint so lint errors stop being masked (#23910)

tools/ui/.prettierignore

@@ -7,3 +7,9 @@ bun.lockb
 
 # Miscellaneous
 /static/
+
+# Build output
+/dist/
+/build/
+/.svelte-kit/
+test-results

tools/ui/eslint.config.js

@@ -45,8 +45,8 @@ export default ts.config(
 		}
 	},
 	{
-		// Exclude Storybook files from main ESLint rules
-		ignores: ['.storybook/**/*']
+		// Exclude generated build output and Storybook files from ESLint
+		ignores: ['dist/**', 'build/**', '.svelte-kit/**', 'test-results/**', '.storybook/**/*']
 	},
 	storybook.configs['flat/recommended']
 );