Update src/frontend/shared/Gallery.svelte

Fix a bug where a video cannot be displayed because it's using an incorrect URL without the "/file=" part.
E.g. as shown in the screenshot below, the frontend tries to fetch `http://127.0.0.1:7860/tmp/gradio/5fef880e2f35db60c11044a485ff84cfcabd75ba/men-on-snow.mp4`, but the correct URL should be `http://127.0.0.1:7860/file=/tmp/gradio/5fef880e2f35db60c11044a485ff84cfcabd75ba/men-on-snow.mp4` , in order words, it should contain the "/file=" part.


src/frontend/shared/Gallery.svelte

@@ -236,7 +236,7 @@
 						class="detailed-video"
 						data-testid="detailed-video"
 						controls
-						src={_value[selected_index].image.path}
+						src={_value[selected_index].image.url}
 						title={_value[selected_index].image.alt_text}
 						preload="auto"
 						on:play
@@ -334,7 +334,7 @@
 							class="detailed-video"
 							data-testid="detailed-video"
 							controls
-							src={entry.image.path}
+							src={entry.image.url}
 							title={entry.image.alt_text}
 							preload="auto"
 							on:play