fix: disable OpenVSX publishing to fix release workflow

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: elasticdotventures

.releaserc.json

@@ -13,7 +13,8 @@
       "semantic-release-vsce",
       {
         "packageVsix": true,
-        "publishVsix": true
+        "publishVsix": true,
+        "publishOpenVSX": false
       }
     ],
     [