test(tabs): delay story due to potential timing chromatic diff (#6437)

**Related Issue:** #5284

## Summary
Adds a delay to the story because it registered a chromatic diff in what
seems like a timing issue

https://www.chromatic.com/test?appId=6266d45509d7eb004aa254fb&id=63e30231eac9ea4af6de885d

src/components/tabs/tabs.stories.ts

@@ -164,7 +164,7 @@ export const disabledTabsAndMediumIconsForLargeTabsTitle_TestOnly = (): string =
   </calcite-tabs>
 `;
 
-export const TabChilrenWithPercentageHeights = (): string => html`
+export const TabChildrenWithPercentageHeights = (): string => html`
   <calcite-tabs style="height: 250px;">
     <calcite-tab-nav slot="title-group">
       <calcite-tab-title selected>Boats</calcite-tab-title>
@@ -174,3 +174,6 @@ export const TabChilrenWithPercentageHeights = (): string => html`
     </calcite-tab>
   </calcite-tabs>
 `;
+TabChildrenWithPercentageHeights.parameters = {
+  chromatic: { delay: 1000 }
+};