Prevent form submit when Move is clicked

app/views/shared/issuable/_sidebar.html.haml

@@ -164,7 +164,7 @@
               = dropdown_content
               = dropdown_loading
               = dropdown_footer add_content_class: true do
-                %button.btn.btn-success.sidebar-move-issue-confirmation-button.js-move-issue-confirmation-button{ disabled: true }
+                %button.btn.btn-success.sidebar-move-issue-confirmation-button.js-move-issue-confirmation-button{ type: 'button', disabled: true }
                   = _('Move')
                   = icon('spinner spin', class: 'sidebar-move-issue-confirmation-loading-icon')
 

changelogs/unreleased/61795-fix-error-when-moving-issues.yml

+---
+title: Remove unintended error message shown when moving issues
+merge_request: 28317
+author:
+type: fixed