Use full path for ignoring node_modules.asar

Co-authored-by: Anmol Sethi <hi@nhooyr.io>

Author: code-asher

.gitignore

@@ -9,7 +9,7 @@ release-packages/
 release-gcp/
 release-images/
 node_modules
-node_modules.asar
+/lib/vscode/node_modules.asar
 node-*
 /plugins
 /lib/coder-cloud-agent