RuntimeDelegate.getInstance() no default implementation is used

[matthiaso]

According to

rest/jaxrs-api/src/main/java/jakarta/ws/rs/ext/RuntimeDelegate.java

Line 77 in 36de360

* <li>Finally, a default implementation class name is used.</li>

at last "a default implementation class name is used".

But no default implemenation is returned, instead a ClassNotFoundException is thrown. -> See

rest/jaxrs-api/src/main/java/jakarta/ws/rs/ext/FactoryFinder.java

Lines 163 to 164 in 36de360

	throw new ClassNotFoundException(
	"Provider for " + factoryId + " cannot be found", null);

At some point the past it seems that a default implementation was returned however this behavior was removed with #581 resp. #592

A possible quick-fix could be just to remove the misleading line from the Javadoc comment.

[matthiaso]

See #1316