Add support for the stable border feature name

[MAILPOET-6359]

packages/js/email-editor/src/components/sidebar/block-compatibility-warnings.tsx

@@ -20,7 +20,15 @@ export function BlockCompatibilityWarnings(): JSX.Element {
 	);
 
 	// Check if the selected block has enabled border configuration
-	const hasBorderSupport = hasBlockSupport(
+	const hasBorderSupport =
+		hasBlockSupport(
+			selectedBlock?.name,
+			// @ts-expect-error Border is not yet supported in the types
+			'border',
+			false
+		) ||
+		// We can remove the check for __experimentalBorder after we support WordPress 6.8+.
+		hasBlockSupport(
 			selectedBlock?.name,
 			// @ts-expect-error Border is not yet supported in the types
 			'__experimentalBorder',