Misc · Web: the web view hands the keyboard back

WKWebView takes AppKit's first responder on a press and gpui's view
never asks for it back, so typed text went to the page for good. The
web view now hands it back through wry's focus_parent on every press
gpui gets and when its page drops. The gallery proves it with a native
key after a press on the page. in_view builds only where it is used,
its test covers a box that straddles the view's top, and the embed's
frame takes the card's bottom corners.

examples/gallery/pages/misc/mod.rs

@@ -66,6 +66,13 @@ pub const PAGE: Page = Page {
         Step::UpAt("cookies", 230.0, 84.0),
         Step::HoverAt("cookies", 20.0, 20.0),
         Step::Shot("cookies-choosing"),
+        Step::DownAt("web", 240.0, 100.0),
+        Step::UpAt("web", 240.0, 100.0),
+        Step::DownAt("converter", 24.0, 60.0),
+        Step::UpAt("converter", 24.0, 60.0),
+        Step::Key("cmd-a"),
+        Step::NativeKey("5"),
+        Step::Shot("keys-back"),
     ],
 };