Use std::size instead of sizeof(a) / sizeof(a[0]) pattern throughout the codebase.

modules/gdscript/gdscript_parser.cpp

@@ -4129,7 +4129,7 @@ GDScriptParser::ParseRule *GDScriptParser::get_rule(GDScriptTokenizer::Token::Ty
 	};
 	/* clang-format on */
 	// Avoid desync.
-	static_assert(sizeof(rules) / sizeof(rules[0]) == GDScriptTokenizer::Token::TK_MAX, "Amount of parse rules don't match the amount of token types.");
+	static_assert(std::size(rules) == GDScriptTokenizer::Token::TK_MAX, "Amount of parse rules don't match the amount of token types.");
 
 	// Let's assume this is never invalid, since nothing generates a TK_MAX.
 	return &rules[p_token_type];