Fix PHPStan for @dataProvider related method not found

There are also 19 reported errors where the specific data provider does not have a "related" test method. For example, in SchedulerJavascriptDefaultTimeTest.php the test function is called testTimeWhenSchedulingIsRequired() and the data provider is dataTimeWhenSchedulingIsRequired() which used to be the recognised way to name them. But we still get the message

------ ----------------------------------------------------------------------- 
  Line   tests/src/FunctionalJavascript/SchedulerJavascriptDefaultTimeTest.php  
 ------ ----------------------------------------------------------------------- 
  54     @dataProvider dataTimeWhenSchedulingIsRequired() related method not    
         found.                                                                 
         🪪  phpunit.dataProviderMethod                                         
 ------ ----------------------------------------------------------------------- 

So there is some new "standard" for naming data providers.

There is no particular agreed standard for dataprovider names, although the discussion is happening on 📌 Define a standard for naming data providers in PHPUnit-based tests Active

The PHPStan warning is checking that the test function contains the expected tag @dataProvider whateverYouCalledIt but without the () after the name. So that is all that needs to be changed here.

Done.

Automatically closed - issue fixed for 2 weeks with no activity.