Format default settings.json with Prettier (#8500)

This PR formats the default `settings.json` file with Prettier.

This should help avoid unnecessary modifications in other PRs making
consequential changes to this file.

Release Notes:

- N/A

assets/settings/default.json

@@ -345,9 +345,7 @@
   "copilot": {
     // The set of glob patterns for which copilot should be disabled
     // in any matching file.
-    "disabled_globs": [
-      ".env"
-    ]
+    "disabled_globs": [".env"]
   },
   // Settings specific to journaling
   "journal": {
@@ -456,12 +454,7 @@
         // Default directories to search for virtual environments, relative
         // to the current working directory. We recommend overriding this
         // in your project's settings, rather than globally.
-        "directories": [
-          ".env",
-          "env",
-          ".venv",
-          "venv"
-        ],
+        "directories": [".env", "env", ".venv", "venv"],
         // Can also be 'csh', 'fish', and `nushell`
         "activate_script": "default"
       }