fix: Correct copy for specific code block [Svelte]

Author: wyMinLwin

packages/site-kit/src/lib/components/Text.svelte

@@ -33,7 +33,12 @@
 				.find((node) => (node as HTMLElement).classList.contains('code-block')) as HTMLElement;
 
 			const ts = !!parent.querySelector('.ts-toggle:checked');
-			const query = ts ? `pre[data-language="ts"] code` : 'pre code';
+			const dataLanguage = parent.querySelector('pre')?.getAttribute('data-language')?.toLowerCase() ?? '';
+			const query = ts
+				? dataLanguage === 'svelte'
+					? `pre:last-of-type code`
+					: `pre[data-language="ts"] code`
+				: 'pre code';
 			const code = parent.querySelector(query) as HTMLElement;
 			navigator.clipboard.writeText(get_text(code));
 		}