Issue #3462264 by alexpott: Skip unsupported methods in rest/jsonapi tests in an efficient way

...ent/tests/src/Functional/Rest/CommentResourceTestBase.php

.../comment/tests/src/Functional/Rest/CommentXmlAnonTest.php

...ent/tests/src/Functional/Rest/CommentXmlBasicAuthTest.php

...omment/tests/src/Functional/Rest/CommentXmlCookieTest.php

...s/file/tests/src/Functional/Rest/FileResourceTestBase.php

.../tests/src/Functional/Rest/ImageStyleResourceTestBase.php

...image/tests/src/Functional/Rest/ImageStyleXmlAnonTest.php

.../tests/src/Functional/Rest/ImageStyleXmlBasicAuthTest.php

...age/tests/src/Functional/Rest/ImageStyleXmlCookieTest.php

core/modules/jsonapi/tests/src/Functional/FileUploadTest.php

...s/node/tests/src/Functional/Rest/NodeResourceTestBase.php

...odules/node/tests/src/Functional/Rest/NodeXmlAnonTest.php

...s/node/tests/src/Functional/Rest/NodeXmlBasicAuthTest.php

...ules/node/tests/src/Functional/Rest/NodeXmlCookieTest.php

...EntityResource/ModeratedNode/ModeratedNodeXmlAnonTest.php

...yResource/ModeratedNode/ModeratedNodeXmlBasicAuthTest.php

...tityResource/ModeratedNode/ModeratedNodeXmlCookieTest.php

...onal/EntityResource/XmlEntityNormalizationQuirksTrait.php

...xonomy/tests/src/Functional/Rest/TermResourceTestBase.php

...es/taxonomy/tests/src/Functional/Rest/TermXmlAnonTest.php