timeseries: enable card width setting in OSS (#5496)

Author: japie1235813

tensorboard/webapp/feature_flag/store/feature_flag_store_config_provider.ts

@@ -30,7 +30,7 @@ export const initialState: FeatureFlagState = {
     metricsImageSupportEnabled: true,
     enabledLinkedTime: false,
     enableTimeSeriesPromotion: false,
-    enabledCardWidthSetting: false,
+    enabledCardWidthSetting: true,
     enabledTimeNamespacedState: false,
   },
   flagOverrides: {},