Fix Desktop Netx Ops preset using host standard and workflow-ptc.

Prefer Desktop's standard.patch.yml / align CLI worker-thread rows to
workflow-ptc, and refuse compositions the host cannot resolve.

Co-authored-by: Cursor <cursoragent@cursor.com>

presets/netxops.preset.patch.yml

@@ -314,8 +314,8 @@
                   backgroundMode: one-shot
                   maxDepth: provider-managed
 
-              - id: workflow-worker-thread
-                name: '@deepseek-ai/dsh-workflow-worker-thread'
+              - id: workflow-ptc
+                name: '@deepseek-ai/dsh-workflow-ptc'
                 config:
                   provider: spawn