docs: Update clipboard handling for Safari compatibility in LLMButtons (#2258)

https://wolfgangrittner.dev/how-to-use-clipboard-api-in-safari/

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Small, localized change to a UI clipboard action; main risk is browser
support/behavior differences for `ClipboardItem` and async fetch
failures.
> 
> **Overview**
> Updates the `LLMButtons` “Copy for LLM” flow to write fetched Markdown
to the clipboard via `navigator.clipboard.write([new
ClipboardItem(...)])` instead of `writeText`, avoiding Safari rejecting
clipboard operations when the fetch is awaited before the write.
> 
> Adds an in-function debug `console.log` of the created
`ClipboardItem`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
8ecd7a9. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>

Author: birosrichard

apify-docs-theme/src/theme/LLMButtons/index.jsx

@@ -168,17 +168,21 @@ const onCopyAsMarkdownClick = async ({ setCopyingStatus }) => {
     try {
         setCopyingStatus('loading');
 
-        // Fetch the markdown content
-        const response = await fetch(markdownUrl);
-
-        if (!response.ok) {
-            throw new Error(`Failed to fetch markdown: ${response.status}`);
-        }
-
-        const markdownContent = await response.text();
+        // Safari requires clipboard writes to be created synchronously inside the user gesture.
+        // We therefore pass a Promise that resolves to a Blob into ClipboardItem instead of
+        // awaiting fetch first — otherwise Safari would reject the clipboard operation.
+        const markdownContent = new ClipboardItem({
+            'text/plain': fetch(markdownUrl)
+                .then((response) => {
+                    if (!response.ok) {
+                        throw new Error(`Failed to fetch markdown: ${response.status}`);
+                    }
+                    return response.text();
+                })
+                .then((content) => new Blob([content], { type: 'text/plain' })),
+        });
 
-        // Copy to clipboard
-        await navigator.clipboard.writeText(markdownContent);
+        await navigator.clipboard.write([markdownContent]);
 
         // Show success feedback
         setCopyingStatus('copied');