fix: configService not handling a field being removed from config.json

src/services/configService.ts

@@ -14,6 +14,13 @@ fs.watchFile(configPath, () => {
         amnesia = false;
     } else {
         logger.info("Detected a change to config.json, reloading its contents.");
+
+        // Set all values to undefined now so if the new config.json omits some fields that were previously present, it's correct in-memory.
+        for (const key of Object.keys(config)) {
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
+            (config as any)[key] = undefined;
+        }
+
         Object.assign(config, JSON.parse(fs.readFileSync(configPath, "utf-8")));
     }
 });