Don't generate events from wxSpinCtrl::SetRange() in wxMSW.

Other ports don't send wxEVT_COMMAND_SPINCTRL_UPDATED from SetRange() even if
the value changed because it was adjusted to fit into the new range and this
makes sense as this change is not due to a user action, so don't send this
event under wxMSW neither.

Also add a unit test checking for this behaviour.

Closes #14583.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72341 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/spinctrl.cpp

@@ -494,6 +494,14 @@ void wxSpinCtrl::SetSelection(long from, long to)
 
 void wxSpinCtrl::SetRange(int minVal, int maxVal)
 {
+    // Manually adjust the old value to avoid an event being sent from
+    // NormalizeValue() called from inside the base class SetRange() as we're
+    // not supposed to generate any events from here.
+    if ( m_oldValue < minVal )
+        m_oldValue = minVal;
+    else if ( m_oldValue > maxVal )
+        m_oldValue = maxVal;
+
     wxSpinButton::SetRange(minVal, maxVal);
 
     // this control is used for numeric entry so restrict the input to numeric