BorderlessTextarea: Auto height on value changes

Update the height on value changes instead of only on input events.
That way, if the value is externally updated then the height will update as well

packages/ui/src/lib/BorderlessTextarea.svelte

@@ -51,6 +51,15 @@
 			}
 		}, 0);
 	});
+
+	$effect(() => {
+		if (ref) {
+			// reference the value to trigger
+			// the effect when it changes
+			value;
+			autoHeight(ref);
+		}
+	});
 </script>
 
 <textarea
@@ -65,7 +74,6 @@
 	{placeholder}
 	{readonly}
 	oninput={(e) => {
-		autoHeight(e.currentTarget);
 		oninput?.(e);
 	}}
 	onfocus={(e) => {