Support cross domain/application copy/paste (#6087)

![AnimateDiff_00001](https://github.com/user-attachments/assets/8ae88dc5-bba8-40c0-9cc2-5e81f579761d)


Browsers place very heavy restrictions on what can be copied and pasted.
See:
- https://alexharri.com/blog/clipboard
- https://www.w3.org/TR/clipboard-apis/#mandatory-data-types-x

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6087-Experimental-cross-domain-application-copy-paste-28e6d73d36508154a0a8deeb392f43a4)
by [Unito](https://www.unito.io)

src/workbench/eventHelpers.ts

@@ -0,0 +1,30 @@
+/**
+ * Utility functions for handling workbench events
+ */
+
+/**
+ * Used by clipboard handlers to determine if copy/paste events should be
+ * intercepted for graph operations vs. allowing default browser behavior
+ * for text inputs and other UI elements.
+ *
+ * @param target - The event target to check
+ * @returns true if copy paste events will be handled by target
+ */
+export function shouldIgnoreCopyPaste(target: EventTarget | null): boolean {
+  return (
+    target instanceof HTMLTextAreaElement ||
+    (target instanceof HTMLInputElement &&
+      ![
+        'button',
+        'checkbox',
+        'file',
+        'hidden',
+        'image',
+        'radio',
+        'range',
+        'reset',
+        'search',
+        'submit'
+      ].includes(target.type))
+  )
+}