api#347: передавать и настраивать UTM part без ссылки в Preland

tests/check-numeric-utm.php

@@ -17,7 +17,7 @@ foreach(['2','rnd','dark','abcdx','abc',[],null,'abcd0'] as $value) {
 if(prelandResolveUtm(["theme"=>"абвг2"],$config)["digits"]["theme"]!=="2")throw new RuntimeException("Unicode fifth symbol");
 for($i=0;$i<50;$i++) if(prelandResolveUtm(['indpic'=>'abcd0'],$config)['digits']['indpic']!=='2')throw new RuntimeException('0 нарушил веса');
 $settings=json_decode(file_get_contents(dirname(__DIR__).'/config.json'),true);
-$defaults=['indpic'=>'1','theme'=>'1','degr'=>'1','reg'=>'2','banch'=>'2','tp'=>'2','cons'=>'2','focus'=>'1'];
+$defaults=['indpic'=>'1','theme'=>'1','degr'=>'1','reg'=>'2','banch'=>'2','tp'=>'2','cons'=>'2','focus'=>'1','part'=>'1'];
 foreach(array_keys($defaults) as $key) foreach(['1','rnd','abcdx','abc',[],null,"\xffabcd2"] as $invalid) {
  $resolved=prelandResolveUtm([$key=>$invalid,'registration'=>'before','bchoice'=>'b','chb'=>'a'],$settings);
  if($resolved['digits'][$key]!==$defaults[$key])throw new RuntimeException('Открытый/invalid URL изменил '.$key);