fix: reset render pass merge flags each frame in FrameGraph.compile() (#8516)

Fixed #8514

Made-with: Cursor

Co-authored-by: Martin Valigursky <mvaligursky@snapchat.com>

Author: mvaligursky

src/scene/frame-graph.js

@@ -62,6 +62,9 @@ class FrameGraph {
         const renderPasses = this.renderPasses;
         for (let i = 0; i < renderPasses.length; i++) {
             const renderPass = renderPasses[i];
+            renderPass._skipStart = false;
+            renderPass._skipEnd = false;
+
             const renderTarget = renderPass.renderTarget;
 
             // if using a target, or null which represents the default back-buffer