fix(site): remove default attr from storyboard track elements (#1211)

site/src/components/docs/demos/thumbnail/html/css/BasicUsage.html

@@ -13,7 +13,6 @@
                     kind="metadata"
                     label="thumbnails"
                     src="/docs/demos/thumbnail/basic.vtt"
-                    default
                 />
             </video>
             <media-thumbnail class="html-thumbnail-text-track__thumbnail" time="12"></media-thumbnail>

site/src/components/docs/demos/thumbnail/react/css/BasicUsage.tsx

@@ -17,7 +17,7 @@ export default function TextTrackUsage() {
           playsInline
           crossOrigin="anonymous"
         >
-          <track kind="metadata" label="thumbnails" src="/docs/demos/thumbnail/basic.vtt" default />
+          <track kind="metadata" label="thumbnails" src="/docs/demos/thumbnail/basic.vtt" />
         </Video>
         <Thumbnail className="react-thumbnail-text-track__thumbnail" time={12} />
       </Player.Container>

site/src/components/home/HeroVideo.tsx

@@ -39,7 +39,6 @@ export default function HeroVideo({
             kind="metadata"
             label="thumbnails"
             src={`https://image.mux.com/${VJS10_DEMO_VIDEO.id}/storyboard.vtt`}
-            default
           />
         </HlsVideo>
       </SkinComponent>

site/src/content/docs/reference/thumbnail.mdx

@@ -46,7 +46,6 @@ import jsonSpriteHtmlTs from "@/components/docs/demos/thumbnail/html/css/JsonSpr
       kind="metadata"
       label="thumbnails"
       src="https://image.mux.com/BV3YZtogl89mg9VcNBhhnHm02Y34zI1nlMuMQfAbl3dM/storyboard.vtt"
-      default
     />
   </Video>
   <Thumbnail time={12} />
@@ -60,7 +59,6 @@ import jsonSpriteHtmlTs from "@/components/docs/demos/thumbnail/html/css/JsonSpr
       kind="metadata"
       label="thumbnails"
       src="https://image.mux.com/BV3YZtogl89mg9VcNBhhnHm02Y34zI1nlMuMQfAbl3dM/storyboard.vtt"
-      default
     />
   </video>
   <media-thumbnail time="12"></media-thumbnail>