[layouts] Add missing tooltips to toolbars

Fixes #18495

Author: nyalldawson

src/ui/layout/qgslayoutdesignerbase.ui

@@ -56,6 +56,9 @@
    <property name="windowTitle">
     <string>Layout Toolbar</string>
    </property>
+   <property name="toolTip">
+    <string>Layout Toolbar</string>
+   </property>
    <attribute name="toolBarArea">
     <enum>TopToolBarArea</enum>
    </attribute>
@@ -81,6 +84,9 @@
    <property name="windowTitle">
     <string>Toolbox</string>
    </property>
+   <property name="toolTip">
+    <string>Toolbox</string>
+   </property>
    <attribute name="toolBarArea">
     <enum>TopToolBarArea</enum>
    </attribute>
@@ -308,6 +314,9 @@
    <property name="windowTitle">
     <string>Navigation Toolbar</string>
    </property>
+   <property name="toolTip">
+    <string>Navigation Toolbar</string>
+   </property>
    <attribute name="toolBarArea">
     <enum>TopToolBarArea</enum>
    </attribute>
@@ -324,6 +333,9 @@
    <property name="windowTitle">
     <string>Actions Toolbar</string>
    </property>
+   <property name="toolTip">
+    <string>Actions Toolbar</string>
+   </property>
    <attribute name="toolBarArea">
     <enum>TopToolBarArea</enum>
    </attribute>
@@ -339,6 +351,9 @@
    <property name="windowTitle">
     <string>Atlas Toolbar</string>
    </property>
+   <property name="toolTip">
+    <string>Atlas Toolbar</string>
+   </property>
    <attribute name="toolBarArea">
     <enum>TopToolBarArea</enum>
    </attribute>
@@ -357,6 +372,9 @@
    <property name="windowTitle">
     <string>Report Toolbar</string>
    </property>
+   <property name="toolTip">
+    <string>Report Toolbar</string>
+   </property>
    <attribute name="toolBarArea">
     <enum>TopToolBarArea</enum>
    </attribute>