Feat: Flash playback using Ruffle

What does this MR do?

Fixes #694 (closed).
This merge request introduces Shockwave Flash playback support using the Ruffle emulator.

Thanks to all the people who helped make this possible:

Debugging:

• From the Ruffle team: kjarosh, Dinnerbone, nosamu
• From the Sharkey team & contributors: Julia, hazelnoot, dakkar, piuvas
• Others: Freeplay

JP translation/localization: Henma

Reviewing (so far): Julia, hazelnoot, dakkar

And of course, the Ruffle project and its contributors!

This MR is standing on the shoulders of giants

Contribution Guidelines

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• I agree to follow this project's Contribution Guidelines
• I have made sure to test this merge request

packages/frontend/src/components/SkFlashPlayer.vue

@@ -171,9 +171,7 @@ function loadContent() {
 	loadingStatus.value = 'Loading Flash file';
 	player.value.load(url.value).then(() => {
 		loadingStatus.value = undefined;
-	}).catch((error) => {
-		console.error(error);
-	});
+	}).catch(handleError);
 }
 
 function playPause() {