Tests: Add additional tests covering Block Hooks registration

Props ockham.
See #59346.
Follow-up [56587].



git-svn-id: https://develop.svn.wordpress.org/trunk@56607 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/data/blocks/hooked-block-error/block.json

@@ -0,0 +1,8 @@
+{
+	"name": "tests/hooked-block-error",
+	"description": "A block that throws an error because it tries to hook a block to itself.",
+	"blockHooks": {
+		"tests/hooked-block-error": "before",
+		"tests/other-block": "after"
+	}
+}