VC - invite display & accept

[bobbykolev]

https://github.com/alkem-io/client-web/issues/6417

• [x] display VC block in pending invites list (User Menu);
• [x] display VC specific copy in invite Dialog;
• [x] don't navigate to the space on Accept of VC invite;
• [ ] VC block in Spaces widget on My Profile - agreed to be extracted in separate task;
• [x] Make the Accept of VC invite work - fixed with this PR - https://github.com/alkem-io/server/pull/4142

You can use the following mutation to send invite, just add existing communityId and VC contributor ID:

mutation inviteContributorsToCommunity($contributorIds: [UUID!]!, $communityId: UUID!, $message: String) {
  inviteContributorsForCommunityMembership(invitationData: {
    invitedContributors: $contributorIds
    communityID: $communityId
    welcomeMessage: $message
  }) {
    id
  }
}

{
  "communityId": "",
  "contributorIds": [""],
  "message": "Custom message."
}