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>
(cherry picked from commit 07c871457f095816b266adaa101e1c6c37b635d5)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/93535
diff --git a/sc/uiconfig/scalc/ui/notebookbar.ui b/sc/uiconfig/scalc/ui/notebookbar.ui
index 05b05ce..c6c08c0 100644
--- a/sc/uiconfig/scalc/ui/notebookbar.ui
+++ b/sc/uiconfig/scalc/ui/notebookbar.ui
@@ -4183,7 +4183,7 @@
                              <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 eb38832..c0f79c4 100644
--- a/sc/uiconfig/scalc/ui/notebookbar_compact.ui
+++ b/sc/uiconfig/scalc/ui/notebookbar_compact.ui
@@ -4154,7 +4154,7 @@
                              <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>