chore: addressing PR feedback

Author: joker23

packages/shared/sdk-server/src/data_sources/fileDataInitilizerFDv2.ts

@@ -102,7 +102,16 @@ export default class FileDataInitializerFDv2 implements subsystemCommon.DataSour
       },
     );
 
-    this._fileLoader.loadAndWatch();
+    this._fileLoader.loadAndWatch().catch((err) => {
+      this._logger?.error('Error loading files', err);
+      statusCallback(
+        subsystemCommon.DataSourceState.Closed,
+        new LDPollingError(
+          DataSourceErrorKind.NetworkError,
+          `Failed to load files: ${err instanceof Error ? err.message : String(err)}`,
+        ),
+      );
+    });
   }
 
   private _processFileData(results: { path: string; data: string }[]) {

packages/shared/sdk-server/src/options/Configuration.ts

@@ -253,7 +253,12 @@ function validateDataSystemOptions(options: Options): {
     }
     // Preserve initializer options if it was provided, since it's not validated by validateTypesAndNames.
     // Currently, setting this option is most commonly used as an override of default initializer options.
-    if (options.dataSource && 'initializerOptions' in options.dataSource) {
+    // Check that the value is not undefined to avoid overwriting defaults when explicitly set to undefined.
+    if (
+      options.dataSource &&
+      'initializerOptions' in options.dataSource &&
+      options.dataSource.initializerOptions !== undefined
+    ) {
       validatedDataSourceOptions.initializerOptions = options.dataSource.initializerOptions;
     }