[osg] Disable conditional plugins. (#21634)

Resolves nightly CI failure:
```
       "D:\buildtrees\osg\x86-windows-dbg\install.vcxproj" (default target) (1) ->
       "D:\buildtrees\osg\x86-windows-dbg\ALL_BUILD.vcxproj" (default target) (3) ->
       "D:\buildtrees\osg\x86-windows-dbg\src\osgPlugins\OpenCASCADE\osgdb_opencascade.vcxproj" (default target) (54) ->
       (ClCompile target) ->
         D:\buildtrees\osg\src\raph-3.6.5-0028e69d98.clean\src\osgPlugins\OpenCASCADE\ReaderWriterOpenCASCADE.cpp(214,49): error C2039: 'Nodes': is not a member of 'Poly_Triangulation' [D:\buildtrees\osg\x86-windows-dbg\src\osgPlugins\OpenCASCADE\osgdb_opencascade.vcxproj]
```

DICOM disabled because there's a check for dcmtk which isn't a dependency of osg[plugins]

Inventor disabled because there's a check for this library.

Opencascade disabled because it's broken.

All others disabled because they were behind some kind of if (XXX_found) in src\osgPlugins\CMakeLists.tx, except, Quicktime left alone because that's part of MacOS?

ports/osg/portfile.cmake

@@ -69,12 +69,28 @@ vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
     docs BUILD_REF_DOCS_TAGFILE
 )
 
+set(BUILD_OSG_PLUGIN_RESTHTTPDEVICE ON)
+if(VCPKG_TARGET_IS_WINDOWS)
+    set(BUILD_OSG_PLUGIN_RESTHTTPDEVICE OFF)
+endif()
+
 vcpkg_configure_cmake(
     SOURCE_PATH ${SOURCE_PATH}
     OPTIONS ${FEATURE_OPTIONS}
         -DOSG_USE_UTF8_FILENAME=${OSG_USE_UTF8_FILENAME}
         -DDYNAMIC_OPENSCENEGRAPH=${OSG_DYNAMIC}
         -DDYNAMIC_OPENTHREADS=${OSG_DYNAMIC}
+        -DBUILD_OSG_PLUGIN_DICOM=OFF
+        -DBUILD_OSG_PLUGIN_OPENCASCADE=OFF
+        -DBUILD_OSG_PLUGIN_INVENTOR=OFF
+        -DBUILD_OSG_PLUGIN_FBX=OFF
+        -DBUILD_OSG_PLUGIN_DIRECTSHOW=OFF
+        -DBUILD_OSG_PLUGIN_QTKIT=OFF
+        -DBUILD_OSG_PLUGIN_SVG=OFF
+        -DBUILD_OSG_PLUGIN_VNC=OFF
+        -DBUILD_OSG_PLUGIN_LUA=OFF
+        -DBUILD_OSG_PLUGIN_RESTHTTPDEVICE=${BUILD_OSG_PLUGIN_RESTHTTPDEVICE}
+        -DBUILD_OSG_PLUGIN_ZEROCONFDEVICE=OFF
         -DBUILD_DASHBOARD_REPORTS=OFF
         -DCMAKE_CXX_STANDARD=11
          ${OPTIONS}

ports/osg/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "osg",
   "version-string": "3.6.5",
-  "port-version": 10,
+  "port-version": 11,
   "description": "The OpenSceneGraph is an open source high performance 3D graphics toolkit.",
   "homepage": "https://github.com/openscenegraph/OpenSceneGraph",
   "dependencies": [

versions/baseline.json

@@ -5058,7 +5058,7 @@
     },
     "osg": {
       "baseline": "3.6.5",
-      "port-version": 10
+      "port-version": 11
     },
     "osg-qt": {
       "baseline": "Qt5",

versions/o-/osg.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "456c4454eee9f4a24916992b0870067f703ef374",
+      "version-string": "3.6.5",
+      "port-version": 11
+    },
     {
       "git-tree": "233201eee3ebfaaac75ba9696d12209e9a1fbc32",
       "version-string": "3.6.5",