Warn about passing named arguments to most internal functions with varargs

[TysonAndre]

Excluding call_user_func, most functions probably can't handle them?

<?php
printf('%s', name: 'name');
// Fatal error: Uncaught ArgumentCountError: printf() does not accept unknown named parameters

Observed: does not warn

Exceptions are marked with Z_PARAM_VARIADIC_WITH_NAMED

/* {{{ Call a user function which is the first parameter
   Warning: This function is special-cased by zend_compile.c and so is usually bypassed */
PHP_FUNCTION(call_user_func)
{
	zval retval;
	zend_fcall_info fci;
	zend_fcall_info_cache fci_cache;

	ZEND_PARSE_PARAMETERS_START(1, -1)
		Z_PARAM_FUNC(fci, fci_cache)
		Z_PARAM_VARIADIC_WITH_NAMED(fci.params, fci.param_count, fci.named_params)
	ZEND_PARSE_PARAMETERS_END();