Resolves: tdf#129484 just install decimal key handler for spinbuttons

as a simple interim fix

Change-Id: I7e393fe20f4fb7ea277c423f9fc9789d658b1e18
Reviewed-on: https://gerrit.libreoffice.org/85507
Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
diff --git a/vcl/unx/gtk3/gtk3gtkinst.cxx b/vcl/unx/gtk3/gtk3gtkinst.cxx
index 186b3f2..e0bbf6d 100644
--- a/vcl/unx/gtk3/gtk3gtkinst.cxx
+++ b/vcl/unx/gtk3/gtk3gtkinst.cxx
@@ -1402,6 +1402,14 @@ protected:
        return pThis->signal_popup_menu(aCEvt);
    }

    void localizeDecimalSeparator()
    {
        // tdf#128867 if localize decimal separator is active we will always
        // need to be able to change the output of the decimal key press
        if (!m_nKeyPressSignalId && Application::GetSettings().GetMiscSettings().GetEnableLocalizedDecimalSep())
            m_nKeyPressSignalId = g_signal_connect(m_pWidget, "key-press-event", G_CALLBACK(signalKey), this);
    }

private:
    bool m_bTakeOwnership;
    bool m_bFrozen;
@@ -1627,10 +1635,6 @@ public:
        , m_nDragDropReceivedSignalId(0)
        , m_nDragLeaveSignalId(0)
    {
        // tdf#128867 if localize decimal separator is active we will always
        // need to be able to change the output of the decimal key press
        if (Application::GetSettings().GetMiscSettings().GetEnableLocalizedDecimalSep())
            m_nKeyPressSignalId = g_signal_connect(m_pWidget, "key-press-event", G_CALLBACK(signalKey), this);
    }

    virtual void connect_key_press(const Link<const KeyEvent&, bool>& rLink) override
@@ -8344,6 +8348,7 @@ public:
        , m_bBlockOutput(false)
        , m_bBlank(false)
    {
        localizeDecimalSeparator();
    }

    virtual int get_value() const override