Replace qtkey-extension with qt-key-unstable-v1

- Remove the "dummy" request, which seems to be just leftover test code.
- Rename the event from "qtkey" to "key". We've already prefixed the
  global interface, no need to also prefix the event.
- Prefix the global with `zqt_` and suffix it with "_v1". If we make
  backwards incompatible changes, we should bump the suffix, rename the
  xml-file and reset the version number.
- Add some documentation to the xml file.
- Add notice about (lack of) compatibility guarantees.
- Four spaces for indentation

Task-number: QTBUG-68423
Change-Id: I78f0eaff4cac22f27318ba32c83c83feb2de857a
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/client/qwaylanddisplay.cpp b/src/client/qwaylanddisplay.cpp
index 946e99bc8..9cbb3524d 100644
--- a/src/client/qwaylanddisplay.cpp
+++ b/src/client/qwaylanddisplay.cpp
@@ -256,7 +256,7 @@ void QWaylandDisplay::registry_global(uint32_t id, const QString &interface, uin
         mSubCompositor.reset(new QtWayland::wl_subcompositor(registry, id, 1));
     } else if (interface == QStringLiteral("qt_touch_extension")) {
         mTouchExtension.reset(new QWaylandTouchExtension(this, id));
-    } else if (interface == QStringLiteral("qt_key_extension")) {
+    } else if (interface == QStringLiteral("zqt_key_v1")) {
         mQtKeyExtension.reset(new QWaylandQtKeyExtension(this, id));
     } else if (interface == QStringLiteral("zwp_text_input_manager_v2")) {
         mTextInputManager.reset(new QtWayland::zwp_text_input_manager_v2(registry, id, 1));