tdf#127889 NB use .uno:ToggleMergeCells instead MergeCells

Change-Id: I495619c0b4f7dfd65b8105c657ea2156ca10550c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/93593
Tested-by: Jenkins
Reviewed-by: andreas_kainz <kainz.a@gmail.com>
diff --git a/sc/uiconfig/scalc/ui/notebookbar.ui b/sc/uiconfig/scalc/ui/notebookbar.ui
index 14c5d22..33a8853 100644
--- a/sc/uiconfig/scalc/ui/notebookbar.ui
+++ b/sc/uiconfig/scalc/ui/notebookbar.ui
@@ -4173,7 +4173,7 @@
                              <object class="GtkToolButton" id="Home-MergeCells">
                                <property name="visible">True</property>
                                <property name="can_focus">False</property>
                                <property name="action_name">.uno:MergeCells</property>
                                <property name="action_name">.uno:ToggleMergeCells</property>
                              </object>
                              <packing>
                                <property name="expand">False</property>
diff --git a/sc/uiconfig/scalc/ui/notebookbar_compact.ui b/sc/uiconfig/scalc/ui/notebookbar_compact.ui
index c04a716..4f9df5e 100644
--- a/sc/uiconfig/scalc/ui/notebookbar_compact.ui
+++ b/sc/uiconfig/scalc/ui/notebookbar_compact.ui
@@ -4144,7 +4144,7 @@
                              <object class="GtkToolButton" id="Home-MergeCells">
                                <property name="visible">True</property>
                                <property name="can_focus">False</property>
                                <property name="action_name">.uno:MergeCells</property>
                                <property name="action_name">.uno:ToggleMergeCells</property>
                              </object>
                              <packing>
                                <property name="expand">False</property>