Don't register unconnected shadow roots with their owner document (#34361)

* Don't falsely register Shadow Roots as connected

Previously, a shadowroot would be registered as connected
during the shadow hosts bind_to_tree call, even if the host
was being bound to an element that was not itself
connected to a document.

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Update WPT expectations

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Move bind/unbind methods into a VirtualMethod impl

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

* Add DocumentFragment/Shadowroot to vtable_for

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

---------

Signed-off-by: Simon Wülker <simon.wuelker@arcor.de>

tests/wpt/meta/custom-elements/CustomElementRegistry.html.ini

@@ -1,5 +1,4 @@
 [CustomElementRegistry.html]
-  expected: CRASH
   [customElements.define must upgrade elements in the shadow-including tree order]
     expected: FAIL
 

tests/wpt/meta/custom-elements/custom-element-registry/upgrade.html.ini

@@ -1,4 +1,3 @@
 [upgrade.html]
-  expected: CRASH
   [Two elements as shadow-including descendants (and not descendants) of the upgraded node]
     expected: FAIL

tests/wpt/meta/html/semantics/forms/the-input-element/radio-disconnected-group-owner.html.ini

@@ -1,5 +1,4 @@
 [radio-disconnected-group-owner.html]
-  expected: CRASH
   [Removed elements are moved into separate radio groups.]
     expected: FAIL
 

tests/wpt/meta/html/semantics/interactive-elements/the-dialog-element/dialog-focus-shadow-double-nested.html.ini

@@ -1,2 +1,6 @@
 [dialog-focus-shadow-double-nested.html]
-  expected: CRASH
+  [show()]
+    expected: FAIL
+
+  [showModal()]
+    expected: FAIL

tests/wpt/meta/shadow-dom/Extensions-to-Event-Interface.html.ini

@@ -1,2 +1,33 @@
 [Extensions-to-Event-Interface.html]
-  expected: CRASH
+  [composedPath() must return an empty array when the event is no longer dispatched]
+    expected: FAIL
+
+  [composed on EventInit must default to false]
+    expected: FAIL
+
+  [composed on EventInit must set the composed flag]
+    expected: FAIL
+
+  [The event must propagate out of open mode shadow boundaries when the composed flag is set]
+    expected: FAIL
+
+  [The event must propagate out of closed mode shadow boundaries when the composed flag is set]
+    expected: FAIL
+
+  [The event must not propagate out of open mode shadow tree of the target but must propagate out of inner shadow trees when the scoped flag is set]
+    expected: FAIL
+
+  [The event must not propagate out of closed mode shadow tree of the target but must propagate out of inner shadow trees when the scoped flag is set]
+    expected: FAIL
+
+  [The event must propagate out of open mode shadow tree in which the relative target and the relative related target are the same]
+    expected: FAIL
+
+  [The event must propagate out of closed mode shadow tree in which the relative target and the relative related target are the same]
+    expected: FAIL
+
+  [composedPath() must contain and only contain the unclosed nodes of target in open mode shadow trees]
+    expected: FAIL
+
+  [composedPath() must contain and only contain the unclosed nodes of target in closed mode shadow trees]
+    expected: FAIL

tests/wpt/meta/shadow-dom/event-with-related-target.html.ini

@@ -1,2 +1,54 @@
 [event-with-related-target.html]
-  expected: CRASH
+  [Firing an event at B1a with relatedNode at B1 with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at B1 with closed mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at B1b1 with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at B1b1 with closed mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1b1 with relatedNode at B1a with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1b1 with relatedNode at B1a with closed mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at D1 with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at D1 with closed mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at D1 with relatedNode at B1a with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at D1 with relatedNode at B1a with closed mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at A1a with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at A1a with closed mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at A1a with relatedNode at B1a with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at A1a with relatedNode at B1a with closed mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at A1a (detached) with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at B1a with relatedNode at A1a (detached) with closed mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at A1a with relatedNode at B1a (detached) with open mode shadow trees]
+    expected: FAIL
+
+  [Firing an event at A1a with relatedNode at B1a (detached) with closed mode shadow trees]
+    expected: FAIL