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/App/Expression.cpp

@@ -3855,6 +3855,13 @@ bool ExpressionParser::isTokenAnIndentifier(const std::string & str)
     return (status == 0 && (token == IDENTIFIER || token == CELLADDRESS));
 }
 
+bool ExpressionParser::isTokenAConstant(const std::string & str)
+{
+    int token{}, status{};
+    std::tie(token, status) = getTokenAndStatus(str);
+    return (status == 0 && token == CONSTANT);
+}
+
 bool ExpressionParser::isTokenAUnit(const std::string & str)
 {
     int token{}, status{};