Configuring CMake based application with QtQuick fails

I installed the Qt 6.2.1 snapshot (qt5 SHA a0cda005ef0f38486c08465356ec373c10234567)

Configuring a simple CMake based application that uses QtQuick (e.g. https://git.qt.io/playground/qtcreator-bug-snippets/-/tree/master/QTCREATORBUG-25030/qtquickcontrols2 ) fails like so:

Running C:\Qt\Tools\CMake_64\bin\cmake.exe -S C:/Users/alportal/Documents/untitled89 -B C:/Users/alportal/Documents/build-untitled89-Qt_6_2_1_WebAssembly-Debug -GNinja "-DCMAKE_BUILD_TYPE:STRING=Debug" "-DQT_QMAKE_EXECUTABLE:STRING=C:/Qt/6.2.1/wasm_32/bin/qmake.bat" "-DCMAKE_PREFIX_PATH:STRING=C:/Qt/6.2.1/wasm_32" "-DCMAKE_C_COMPILER:STRING=C:/Users/alportal/dev/emsdk-2.0.14/upstream/emscripten/emcc.bat" "-DCMAKE_CXX_COMPILER:STRING=C:/Users/alportal/dev/emsdk-2.0.14/upstream/emscripten/em++.bat" "-DCMAKE_TOOLCHAIN_FILE:PATH=C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6/qt.toolchain.cmake" in C:\Users\alportal\Documents\build-untitled89-Qt_6_2_1_WebAssembly-Debug.
– Performing Test HAVE_STDATOMIC
– Performing Test HAVE_STDATOMIC - Success
– Found WrapAtomic: TRUE
– Using Qt bundled PCRE2.
– Found WrapPCRE2: TRUE
– Performing Test HAVE_GETTIME
– Performing Test HAVE_GETTIME - Success
– Found WrapRt: TRUE
– Found GLESv2: ON
– Performing Test HAVE_EGL
– Performing Test HAVE_EGL - Success
– Found EGL: C:/Users/alportal/dev/emsdk-2.0.14/upstream/emscripten/system/include (found version "1.5")
– Using Qt bundled PNG.
– Found WrapPNG: TRUE
– Using Qt bundled Harfbuzz.
– Found WrapHarfbuzz: TRUE
– Using Qt bundled Freetype.
– Found WrapFreetype: TRUE
– Found GLESv2: ON
CMake Warning at C:/Qt/Tools/CMake_64/share/cmake-3.21/Modules/CMakeFindDependencyMacro.cmake:47 (find_package):
Found package configuration file:

C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6Qml/Qt6QmlConfig.cmake

but it set Qt6Qml_FOUND to FALSE so package "Qt6Qml" is considered to be
NOT FOUND. Reason given by package:

The following imported targets are referenced, but are missing:
Qt6::qtquicktemplates2plugin

Call Stack (most recent call first):
C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6/QtPublicDependencyHelpers.cmake:14 (find_dependency)
C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6Quick/Qt6QuickDependencies.cmake:91 (_qt_internal_find_dependencies)
C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6Quick/Qt6QuickConfig.cmake:40 (include)
C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6/Qt6Config.cmake:176 (find_package)
CMakeLists.txt:8 (find_package)

CMake Warning at C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6/Qt6Config.cmake:176 (find_package):
Found package configuration file:

C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6Quick/Qt6QuickConfig.cmake

but it set Qt6Quick_FOUND to FALSE so package "Qt6Quick" is considered to
be NOT FOUND. Reason given by package:

Qt6Quick could not be found because dependency Qt6Qml could not be found.

Call Stack (most recent call first):
CMakeLists.txt:8 (find_package)

CMake Error at CMakeLists.txt:8 (find_package):
Found package configuration file:

C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6/Qt6Config.cmake

but it set Qt6_FOUND to FALSE so package "Qt6" is considered to be NOT
FOUND. Reason given by package:

Failed to find Qt component "Quick".

Expected Config file at
"C:/Qt/6.2.1/wasm_32/lib/cmake/Qt6Quick/Qt6QuickConfig.cmake" exists