fix: keep bypass/mute state on frontend 1.53+ node shell state (#1123)

ComfyUI frontend 1.53 turned LGraphNode.mode into a prototype accessor
backed by node._state, and serialize() now reads that state directly.
Redefining mode on the instance shadowed the setter, so bypass/mute
never reached the serialized workflow and silently reverted to Always
on save/reload or workflow tab switch.

Add interceptModeChange() in web/comfyui/utils.js: it delegates to the
prototype accessor when one exists (observing changes only), and falls
back to the legacy closure accessor on older frontends. Use it in
lora_loader.js and in the Vue widgets' setupModeChangeHandler, which
covers the LoRA provider/aggregator nodes with the same latent bug.

web/comfyui/lora_loader.js

@@ -10,6 +10,7 @@ import {
   collectActiveLorasFromChain,
   updateConnectedTriggerWords,
   chainCallback,
+  interceptModeChange,
   mergeLoras,
   getAllGraphNodes,
   getNodeFromGraph,
@@ -189,24 +190,17 @@ app.registerExtension({
         let isUpdating = false;
         let isSyncingInput = false;
 
-        // Mechanism: Property descriptor to listen for mode changes
+        // Mechanism: Observe mode changes without shadowing the frontend's
+        // own `mode` accessor (frontend >= 1.53 serializes from shell state,
+        // so redefining `mode` here would silently revert bypass/mute).
         const self = this;
-        let _mode = this.mode;
-        Object.defineProperty(this, 'mode', {
-          get() {
-            return _mode;
-          },
-          set(value) {
-            const oldValue = _mode;
-            _mode = value;
-
-            // Trigger mode change handler
-            if (self.onModeChange) {
-              self.onModeChange(value, oldValue);
-            }
-
-            console.log(`[Lora Loader] Node mode changed from ${oldValue} to ${value}`);
+        interceptModeChange(this, (newMode, oldMode) => {
+          // Trigger mode change handler
+          if (self.onModeChange) {
+            self.onModeChange(newMode, oldMode);
           }
+
+          console.log(`[Lora Loader] Node mode changed from ${oldMode} to ${newMode}`);
         });
 
         // Define the mode change handler