fix: propagate data-timeline-locked in compiler inliners

The runtime path (compositionLoader.ts) already propagated
data-timeline-locked from inner root to host, but both compiler
inliners (bundler + producer) did not. Bundled output re-opened in
Studio would lose the lock. Now propagated in inlineSubCompositions
alongside the existing data-hf-authored-id propagation.

packages/core/src/compiler/inlineSubCompositions.ts

@@ -302,6 +302,10 @@ export function inlineSubCompositions(
       );
     }
 
+    if (innerRoot?.hasAttribute("data-timeline-locked")) {
+      hostEl.setAttribute("data-timeline-locked", "");
+    }
+
     // Copy dimension attributes from inner root to host if missing
     if (innerRoot) {
       const innerW = innerRoot.getAttribute("data-width");