adding error for when invite request fails (#24436)

Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/channels/src/actions/invite_actions.ts

@@ -42,6 +42,11 @@ export function sendMembersInvites(teamId: string, users: UserProfile[], emails:
         if (usersToAdd.length > 0) {
             const response = await dispatch(addUsersToTeam(teamId, usersToAdd.map((u) => u.id)));
             const members = response.data || [];
+            if (response.error) {
+                for (const userToAdd of usersToAdd) {
+                    notSent.push({user: userToAdd, reason: response.error.message});
+                }
+            } else {
                 for (const userToAdd of usersToAdd) {
                     const memberWithError = members.find((m: TeamMemberWithError) => m.user_id === userToAdd.id && m.error);
                     if (memberWithError) {
@@ -51,6 +56,7 @@ export function sendMembersInvites(teamId: string, users: UserProfile[], emails:
                     }
                 }
             }
+        }
         if (emails.length > 0) {
             let response;
             try {
@@ -232,6 +238,11 @@ export function sendMembersInvitesToChannels(
         if (usersToAdd.length > 0) {
             const response = await dispatch(addUsersToTeam(teamId, usersToAdd.map((u) => u.id)));
             const members = response.data || [];
+            if (response.error) {
+                for (const userToAdd of usersToAdd) {
+                    notSent.push({user: userToAdd, reason: response.error.message});
+                }
+            } else {
                 for (const userToAdd of usersToAdd) {
                     const memberWithError = members.find((m: TeamMemberWithError) => m.user_id === userToAdd.id && m.error);
                     if (memberWithError) {
@@ -241,6 +252,7 @@ export function sendMembersInvitesToChannels(
                     }
                 }
             }
+        }
         if (emails.length > 0) {
             let response;
             try {