Implemented helper method of QFileDialog::getSaveFileName to prevent user from saving files with invalid names.

Signed-off-by: Chris Galvan <chgalvan@amazon.com>

Gems/AtomLyIntegration/CommonFeatures/Code/Source/Material/EditorMaterialComponentExporter.cpp

@@ -11,6 +11,7 @@
 
 #include <AzFramework/API/ApplicationAPI.h>
 #include <AzQtComponents/Components/Widgets/BrowseEdit.h>
+#include <AzQtComponents/Components/Widgets/FileDialog.h>
 #include <AzToolsFramework/API/EditorAssetSystemAPI.h>
 #include <AzToolsFramework/API/EditorWindowRequestBus.h>
 #include <AzToolsFramework/API/ToolsApplicationAPI.h>
@@ -22,7 +23,6 @@ AZ_PUSH_DISABLE_WARNING(4251 4800, "-Wunknown-warning-option") // disable warnin
 #include <QCheckBox>
 #include <QComboBox>
 #include <QDialogButtonBox>
-#include <QFileDialog>
 #include <QHBoxLayout>
 #include <QHeaderView>
 #include <QLabel>
@@ -145,7 +145,7 @@ namespace AZ
 
                     // Whenever the browse button is clicked, open a save file dialog in the same location as the current export file setting
                     QObject::connect(materialFileWidget, &AzQtComponents::BrowseEdit::attachedButtonTriggered, materialFileWidget, [&dialog, &exportItem, materialFileWidget, overwriteCheckBox]() {
-                        QFileInfo fileInfo = QFileDialog::getSaveFileName(&dialog,
+                        QFileInfo fileInfo = AzQtComponents::FileDialog::GetSaveFileName(&dialog,
                             QString("Select Material Filename"),
                             exportItem.GetExportPath().c_str(),
                             QString("Material (*.material)"),