Removes QIntValidator and uses setRange

Replaces the usage of `QIntValidator` with the `setRange` function available in the PDM framework for limiting integer input in UI fields.
This approach provides a more direct and maintainable way to specify value ranges for UI elements.

This change simplifies the code and reduces dependencies.

Fwk/AppFwk/cafUserInterface/cafPdmUiDateEditor.cpp

@@ -46,7 +46,6 @@
 #include <QApplication>
 #include <QDate>
 #include <QGridLayout>
-#include <QIntValidator>
 #include <QLabel>
 #include <QLineEdit>
 #include <QMainWindow>

Fwk/AppFwk/cafUserInterface/cafPdmUiFilePathEditor.cpp

@@ -48,7 +48,6 @@
 #include <QClipboard>
 #include <QDir>
 #include <QFileDialog>
-#include <QIntValidator>
 #include <QLabel>
 #include <QLineEdit>
 

Fwk/AppFwk/cafUserInterface/cafPdmUiLineEditor.cpp

@@ -52,7 +52,6 @@
 #include <QBitmap>
 #include <QCompleter>
 #include <QDebug>
-#include <QIntValidator>
 #include <QKeyEvent>
 #include <QLabel>
 #include <QMainWindow>

Fwk/AppFwk/cafUserInterface/cafPdmUiSliderEditor.cpp

@@ -43,7 +43,6 @@
 #include "cafPdmUiFieldEditorHandle.h"
 
 #include <QHBoxLayout>
-#include <QIntValidator>
 #include <QLabel>
 #include <QLineEdit>
 

Fwk/AppFwk/cafUserInterface/cafPdmUiTextEditor.cpp

@@ -41,7 +41,6 @@
 #include "cafPdmUiDefaultObjectEditor.h"
 #include "cafPdmUiFieldEditorHandle.h"
 
-#include <QIntValidator>
 #include <QLabel>
 #include <QMimeData>
 #include <QTextEdit>

Fwk/AppFwk/cafUserInterface/cafPdmUiTimeEditor.cpp

@@ -45,7 +45,6 @@
 
 #include <QApplication>
 #include <QGridLayout>
-#include <QIntValidator>
 #include <QLabel>
 #include <QLineEdit>
 #include <QMainWindow>