Doc: Fix documentation warnings for Qt Core

qsocketnotifier.h:113:69: error: cannot initialize return object of type
    'Qt::HANDLE' (aka 'void *') with an lvalue of type 'const
    QSocketDescriptor::DescriptorType' (aka 'const int')

qsortfilterproxymodel.cpp:2938: error: out-of-line definition of
    'recursiveFilteringEnabledChanged' does not match any declaration in
    'QSortFilterProxyModel'

qline.cpp:376: (qdoc) warning: Cannot find 'QLineF::IntersectionType'
    specified with '\enum' in any header file

Fixes: QTBUG-83676
Change-Id: I57b51f4ad15fdc50db88100ad5b1cb85ed394b7a
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

src/corelib/itemmodels/qsortfilterproxymodel.cpp

@@ -2937,7 +2937,7 @@ void QSortFilterProxyModel::setFilterRole(int role)
 
 /*!
     \since 5.15
-    \fn void QSortFilterProxyModel::recursiveFilteringEnabledChanged(int recursiveFilteringEnabled)
+    \fn void QSortFilterProxyModel::recursiveFilteringEnabledChanged(bool recursiveFilteringEnabled)
     \brief This signal is emitted when the recursive filter setting is changed
            to \a recursiveFilteringEnabled.
 */

src/corelib/kernel/qsocketnotifier.h

@@ -94,7 +94,7 @@ private:
 class QSocketDescriptor
 {
 public:
-#if defined(Q_OS_WIN)
+#if defined(Q_OS_WIN) || defined(Q_QDOC)
     using DescriptorType = Qt::HANDLE;
 #define Q_DECL_CONSTEXPR_NOT_WIN
 #else

src/corelib/tools/qline.cpp

@@ -370,11 +370,18 @@ QDataStream &operator>>(QDataStream &stream, QLine &line)
 
 /*!
     \enum QLineF::IntersectType
-    \obsolete Use QLineF::IntersectionType instead
+    \obsolete Use QLineF::IntersectionType instead.
+
+    \value NoIntersection
+           Lines do not intersect.
+    \value UnboundedIntersection
+           Lines intersect, but not within the range defined by their lengths.
+    \value BoundedIntersection
+           Lnes intersect within the range defined by their lengths.
 */
 
 /*!
-    \enum QLineF::IntersectionType
+    \typealias QLineF::IntersectionType
 
     Describes the intersection between two lines.