Prevent using reserved names for properties or aliases (Fix #16846) (#16902)

* Prevent naming properties with reserved words (Fix #16846)

* Prevent using reserved constant names for properties or aliases

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* App: Add unit test for isTokenAConstant

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>

src/Gui/DlgAddProperty.cpp

@@ -28,6 +28,7 @@
 #include <App/Application.h>
 #include <App/Document.h>
 #include <App/DocumentObject.h>
+#include <App/ExpressionParser.h>
 #include <Base/Tools.h>
 
 #include "DlgAddProperty.h"
@@ -111,6 +112,13 @@ void DlgAddProperty::accept()
     if(ui->chkAppend->isChecked())
         name = group + "_" + name;
 
+    if (App::ExpressionParser::isTokenAUnit(name) || App::ExpressionParser::isTokenAConstant(name)) {
+        QMessageBox::critical(getMainWindow(),
+            QObject::tr("Invalid name"),
+            QObject::tr("The property name is a reserved word."));
+        return;
+    }
+
     for(auto c : containers) {
         auto prop = c->getPropertyByName(name.c_str());
         if(prop && prop->getContainer() == c) {