[PM-27341] Chrome importer refactors (#16720)

Various refactors to the chrome importer

apps/desktop/desktop_native/napi/index.d.ts

@@ -3,15 +3,6 @@
 
 /* auto-generated by NAPI-RS */
 
-/** Mechanisms that load data into the importer */
-export interface NativeImporterMetadata {
-  /** Identifies the importer */
-  id: string
-  /** Describes the strategies used to obtain imported data */
-  loaders: Array<string>
-  /** Identifies the instructions for the importer */
-  instructions: string
-}
 export declare namespace passwords {
   /** The error message returned when a password is not found during retrieval or deletion. */
   export const PASSWORD_NOT_FOUND: string
@@ -249,6 +240,11 @@ export declare namespace chromium_importer {
     login?: Login
     failure?: LoginImportFailure
   }
+  export interface NativeImporterMetadata {
+    id: string
+    loaders: Array<string>
+    instructions: string
+  }
   /** Returns OS aware metadata describing supported Chromium based importers as a JSON string. */
   export function getMetadata(): Record<string, NativeImporterMetadata>
   export function getInstalledBrowsers(): Array<string>