resolve-suspense: process new SX scripts before resolving

Streaming resolve scripts arrive after boot, so any extra component
defs sent as <script type="text/sx"> tags weren't being loaded.
Fix in the spec (boot.sx): call (process-sx-scripts nil) at the
start of resolve-suspense so late-arriving component defs are
available in componentEnv before rendering.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

shared/sx/ref/boot.sx

@@ -103,6 +103,9 @@
 
 (define resolve-suspense
   (fn (id sx)
+    ;; Process any new <script type="text/sx"> tags that arrived via
+    ;; streaming (e.g. extra component defs) before resolving.
+    (process-sx-scripts nil)
     (let ((el (dom-query (str "[data-suspense=\"" id "\"]"))))
       (if el
         (do