Prevent cli path from being synced across remote instances

This will fix a problem where settings sync will cause the cli not
to be found on codespaces.

Author: aeisenberg

extensions/ql-vscode/package.json

@@ -136,7 +136,7 @@
       "title": "CodeQL",
       "properties": {
         "codeQL.cli.executablePath": {
-          "scope": "window",
+          "scope": "machine-overridable",
           "type": "string",
           "default": "",
           "markdownDescription": "Path to the CodeQL executable that should be used by the CodeQL extension. The executable is named `codeql` on Linux/Mac and `codeql.exe` on Windows. If empty, the extension will look for a CodeQL executable on your shell PATH, or if CodeQL is not on your PATH, download and manage its own CodeQL executable."