Generate presigned URL for email assets at render time

Signed-off-by: Émile Ré <emile@getprobo.com>

pkg/iam/organization_service.go

@@ -464,9 +464,10 @@ func (s *OrganizationService) InviteMember(
 				return fmt.Errorf("cannot generate invitation token: %w", err)
 			}
 
-			emailPresenter := emails.NewPresenter(s.baseURL, s.emailStaticAssetURLs, identity.FullName)
+			emailPresenter := emails.NewPresenter(s.fm, s.bucket, s.baseURL, identity.FullName)
 
 			subject, textBody, htmlBody, err := emailPresenter.RenderInvitation(
+				ctx,
 				"/auth/signup-from-invitation",
 				invitationToken,
 				organization.Name,