Update the remove modal fork count service

Changes the fork count service from BatchForksCountService to
ForksCountService.

app/views/projects/_remove.html.haml

 - return unless can?(current_user, :remove_project, project)
 - merge_requests_count = Projects::AllMergeRequestsCountService.new(project).count
 - issues_count = Projects::AllIssuesCountService.new(project).count
+- forks_count = Projects::ForksCountService.new(project).count
 
 .sub-section
   %h4.danger-title= _('Delete project')
@@ -9,4 +10,4 @@
     = link_to _('Learn more.'), help_page_path('user/project/settings/index', anchor: 'removing-a-fork-relationship'), target: '_blank', rel: 'noopener noreferrer'
   %p
     %strong= _('Deleted projects cannot be restored!')
-  #js-project-delete-button{ data: { form_path: project_path(project), confirm_phrase: delete_confirm_phrase(project), is_fork: project.forked?.to_s, issues_count: number_with_delimiter(issues_count), merge_requests_count: number_with_delimiter(merge_requests_count), forks_count: number_with_delimiter(project.forks_count), stars_count: number_with_delimiter(project.star_count) } }
+  #js-project-delete-button{ data: { form_path: project_path(project), confirm_phrase: delete_confirm_phrase(project), is_fork: project.forked?.to_s, issues_count: number_with_delimiter(issues_count), merge_requests_count: number_with_delimiter(merge_requests_count), forks_count: number_with_delimiter(forks_count), stars_count: number_with_delimiter(project.star_count) } }

ee/app/views/projects/_remove.html.haml

@@ -5,6 +5,7 @@
 - recovery_help_path = help_page_path('user/project/settings/index', anchor: 'delete-a-project')
 - merge_requests_count = Projects::AllMergeRequestsCountService.new(project).count
 - issues_count = Projects::AllIssuesCountService.new(project).count
+- forks_count = Projects::ForksCountService.new(project).count
 
 - unless project.marked_for_deletion?
   .sub-section
@@ -13,7 +14,7 @@
       %strong= s_('Delayed Project Deletion (%{adjourned_deletion})') % { adjourned_deletion: adjourned_deletion ? 'Enabled' : 'Disabled' }
     - if adjourned_deletion
       = render 'projects/settings/marked_for_removal'
-      #js-project-adjourned-delete-button{ data: { recovery_help_path: recovery_help_path, adjourned_removal_date: adjourned_date, form_path: project_path(project), confirm_phrase: delete_confirm_phrase(project), is_fork: project.forked?.to_s, issues_count: number_with_delimiter(issues_count), merge_requests_count: number_with_delimiter(merge_requests_count), forks_count: number_with_delimiter(project.forks_count), stars_count: number_with_delimiter(project.star_count) } }
+      #js-project-adjourned-delete-button{ data: { recovery_help_path: recovery_help_path, adjourned_removal_date: adjourned_date, form_path: project_path(project), confirm_phrase: delete_confirm_phrase(project), is_fork: project.forked?.to_s, issues_count: number_with_delimiter(issues_count), merge_requests_count: number_with_delimiter(merge_requests_count), forks_count: number_with_delimiter(forks_count), stars_count: number_with_delimiter(project.star_count) } }
     - else
       %p
         %span.gl-text-gray-500= _('Projects will be permanently deleted immediately.')
@@ -21,7 +22,7 @@
       %p= permanent_delete_message(project)
       %p
         %strong= _('Are you ABSOLUTELY SURE you wish to delete this project?')
-      #js-project-delete-button{ data: { form_path: project_path(project), confirm_phrase: delete_confirm_phrase(project), is_fork: project.forked?.to_s, issues_count: number_with_delimiter(issues_count), merge_requests_count: number_with_delimiter(merge_requests_count), forks_count: number_with_delimiter(project.forks_count), stars_count: number_with_delimiter(project.star_count) } }
+      #js-project-delete-button{ data: { form_path: project_path(project), confirm_phrase: delete_confirm_phrase(project), is_fork: project.forked?.to_s, issues_count: number_with_delimiter(issues_count), merge_requests_count: number_with_delimiter(merge_requests_count), forks_count: number_with_delimiter(forks_count), stars_count: number_with_delimiter(project.star_count) } }
 - else
   = render 'projects/settings/restore', project: project
   = render 'projects/settings/permanently_delete', project: project

ee/app/views/projects/settings/_permanently_delete.html.haml

 - merge_requests_count = Projects::AllMergeRequestsCountService.new(project).count
 - issues_count = Projects::AllIssuesCountService.new(project).count
+- forks_count = Projects::ForksCountService.new(project).count
 
 .sub-section
   %h4.danger-title= _('Permanently delete project')
@@ -8,4 +9,4 @@
   %p= permanent_delete_message(project)
   %p
     %strong= _('Are you ABSOLUTELY SURE you wish to delete this project?')
-  #js-project-delete-button{ data: { form_path: project_path(project, permanently_delete: true), confirm_phrase: delete_confirm_phrase(project), is_fork: project.forked?.to_s, issues_count: number_with_delimiter(issues_count), merge_requests_count: number_with_delimiter(merge_requests_count), forks_count: number_with_delimiter(project.forks_count), stars_count: number_with_delimiter(project.star_count) } }
+  #js-project-delete-button{ data: { form_path: project_path(project, permanently_delete: true), confirm_phrase: delete_confirm_phrase(project), is_fork: project.forked?.to_s, issues_count: number_with_delimiter(issues_count), merge_requests_count: number_with_delimiter(merge_requests_count), forks_count: number_with_delimiter(forks_count), stars_count: number_with_delimiter(project.star_count) } }