fix type

Author: thelullabyy

src/libs/ReportUtils.ts

@@ -9315,7 +9315,12 @@ function isAdminOwnerApproverOrReportOwner(report: OnyxEntry<Report>, policy: On
 /**
  * Whether the user can join a report
  */
-function canJoinChat(report: OnyxEntry<Report>, parentReportAction: OnyxInputOrEntry<ReportAction>, policy: OnyxInputOrEntry<Policy>, reportNameValuePairs: ReportNameValuePairs): boolean {
+function canJoinChat(
+    report: OnyxEntry<Report>,
+    parentReportAction: OnyxInputOrEntry<ReportAction>,
+    policy: OnyxInputOrEntry<Policy>,
+    reportNameValuePairs: ReportNameValuePairs | undefined,
+): boolean {
     // We disabled thread functions for whisper action
     // So we should not show join option for existing thread on whisper message that has already been left, or manually leave it
     if (isWhisperAction(parentReportAction)) {