Merge branch '45446-new-sha-widget-breaks-on-new-merge-request' into 'master'

Fix regression around new SHA widget in "New Merge Request" Screen

Closes #45446

See merge request gitlab-org/gitlab-ce!18422

app/assets/stylesheets/pages/commits.scss

@@ -180,10 +180,6 @@
   justify-content: space-between;
   align-items: center;
   flex-grow: 1;
-
-  .merge-request-branches & {
-    flex-direction: column;
-  }
 }
 
 .commit-content {

app/views/projects/merge_requests/creations/_new_compare.html.haml

@@ -3,7 +3,7 @@
 
 = form_for [@project.namespace.becomes(Namespace), @project, @merge_request], url: project_new_merge_request_path(@project), method: :get, html: { class: "merge-request-form form-inline js-requires-input" } do |f|
   .hide.alert.alert-danger.mr-compare-errors
-  .merge-request-branches.js-merge-request-new-compare.row{ 'data-target-project-url': project_new_merge_request_update_branches_path(@source_project), 'data-source-branch-url': project_new_merge_request_branch_from_path(@source_project), 'data-target-branch-url': project_new_merge_request_branch_to_path(@source_project) }
+  .js-merge-request-new-compare.row{ 'data-target-project-url': project_new_merge_request_update_branches_path(@source_project), 'data-source-branch-url': project_new_merge_request_branch_from_path(@source_project), 'data-target-branch-url': project_new_merge_request_branch_to_path(@source_project) }
     .col-md-6
       .panel.panel-default.panel-new-merge-request
         .panel-heading