Give notification buttons btn-xs class

Add changelog

app/views/projects/buttons/_fork.html.haml

@@ -8,7 +8,7 @@
       - else
         - can_create_fork = current_user.can?(:create_fork)
         = link_to new_project_fork_path(@project),
-            class: "btn btn-default has-tooltip count-badge-button d-flex align-items-center fork-btn #{'has-tooltip disabled' unless can_create_fork}",
+            class: "btn btn-default btn-xs has-tooltip count-badge-button d-flex align-items-center fork-btn #{'has-tooltip disabled' unless can_create_fork}",
             title: (s_('ProjectOverview|You have reached your project limit') unless can_create_fork) do
           = sprite_icon('fork', { css_class: 'icon' })
           %span= s_('ProjectOverview|Fork')

app/views/shared/notifications/_button.html.haml

@@ -17,14 +17,14 @@
       .js-notification-toggle-btns
         %div{ class: ("btn-group" if notification_setting.custom?) }
           - if notification_setting.custom?
-            %button.dropdown-new.btn.btn-default.has-tooltip.notifications-btn.text-left#notifications-button{ type: "button", title: button_title, class: "#{btn_class}", "aria-label" => aria_label, data: { container: "body", toggle: "modal", target: "#" + notifications_menu_identifier("modal", notification_setting), display: 'static' } }
+            %button.dropdown-new.btn.btn-default.btn-xs.has-tooltip.notifications-btn.text-left#notifications-button{ type: "button", title: button_title, class: "#{btn_class}", "aria-label" => aria_label, data: { container: "body", toggle: "modal", target: "#" + notifications_menu_identifier("modal", notification_setting), display: 'static' } }
               = icon("bell", class: "js-notification-loading")
               = notification_title(notification_setting.level)
             %button.btn.dropdown-toggle{ data: { toggle: "dropdown", target: notifications_menu_identifier("dropdown", notification_setting), flip: "false" } }
               = icon('caret-down')
               .sr-only Toggle dropdown
           - else
-            %button.dropdown-new.btn.btn-default.has-tooltip.notifications-btn#notifications-button{ type: "button", title: button_title, class: "#{btn_class}", "aria-label" => aria_label, data: { container: "body", toggle: "dropdown", target: notifications_menu_identifier("dropdown", notification_setting), flip: "false" } }
+            %button.dropdown-new.btn.btn-default.btn-xs.has-tooltip.notifications-btn#notifications-button{ type: "button", title: button_title, class: "#{btn_class}", "aria-label" => aria_label, data: { container: "body", toggle: "dropdown", target: notifications_menu_identifier("dropdown", notification_setting), flip: "false" } }
               .float-left
                 = icon("bell", class: "js-notification-loading")
                 = notification_title(notification_setting.level)

changelogs/unreleased/60724-watch-button.yml

+---
+title: Fix watch button styling and notifications buttons consistency
+merge_request: 32827
+author:
+type: fixed