Fix Auth emulator export only exporting 20 users. (#3311)

* Fix Auth emulator export only exporting 20 users.

Fixes b/186445689

* Rename the variable limit to maxResults.

Author: yuchenshi

src/emulator/auth/operations.ts

@@ -440,17 +440,17 @@ function batchGet(
   reqBody: unknown,
   ctx: ExegesisContext
 ): Schemas["GoogleCloudIdentitytoolkitV1DownloadAccountResponse"] {
-  const limit = Math.min(Math.floor(ctx.params.query.maxResults) || 20, 1000);
+  const maxResults = Math.min(Math.floor(ctx.params.query.maxResults) || 20, 1000);
 
   const users = state.queryUsers(
     {},
     { sortByField: "localId", order: "ASC", startToken: ctx.params.query.nextPageToken }
   );
   let newPageToken: string | undefined = undefined;
 
-  // As a non-standard behavior, passing in limit=-1 will return all users.
-  if (limit >= 0 && users.length >= limit) {
-    users.length = limit;
+  // As a non-standard behavior, passing in maxResults=-1 will return all users.
+  if (maxResults >= 0 && users.length >= maxResults) {
+    users.length = maxResults;
     if (users.length) {
       newPageToken = users[users.length - 1].localId;
     }

src/emulator/hubExport.ts

@@ -182,7 +182,7 @@ export class HubExport {
       {
         host,
         port,
-        path: `/identitytoolkit.googleapis.com/v1/projects/${this.projectId}/accounts:batchGet?limit=-1`,
+        path: `/identitytoolkit.googleapis.com/v1/projects/${this.projectId}/accounts:batchGet?maxResults=-1`,
         headers: { Authorization: "Bearer owner" },
       },
       accountsFile