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"
+	}
+}

tests/phpunit/data/blocks/notice/block.json

@@ -31,7 +31,10 @@
 		"root": ".wp-block-notice"
 	},
 	"blockHooks": {
-		"core/post-content": "before"
+		"tests/before": "before",
+		"tests/after": "after",
+		"tests/first-child": "firstChild",
+		"tests/last-child": "lastChild"
 	},
 	"supports": {
 		"align": true,