[BUG] Unit tests fault when CUB Cache Disablement is Disabled

[tmartin-gh]

Describe the Bug Unit tests throw an instance of std::bad_any_cast when compiling with MATX_DISABLE_CUB_CACHE=OFF

Note: Google Test filter = ReductionTestsNumericNoHalfAllExecs/0.Sum*
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from ReductionTestsNumericNoHalfAllExecs/0, where TypeParam = cuda::std::__4::tuple<unsigned int, matx::cudaExecutor>
[ RUN      ] ReductionTestsNumericNoHalfAllExecs/0.Sum
terminate called after throwing an instance of 'std::bad_any_cast'

To Reproduce

cmake -DCMAKE_CUDA_ARCHITECTURES=80 -DCMAKE_BUILD_TYPE=Debug -DMATX_BUILD_EXAMPLES=ON -DMATX_BUILD_TESTS=ON /nfs/scratch.timothym_ate_1/MatX3 -DMATX_DISABLE_CUB_CACHE=OFF

make -j matx_test

./test/matx_test --gtest_filter="ReductionTestsNumericNoHalfAllExecs/0.Sum*"

Tested with

commit 4528b945a493b9c245cf602cc109a0f185bfed3f (HEAD -> main, origin/main, origin/HEAD)
Author: Cliff Burdick <[email protected]>
Date:   Thu Oct 17 08:41:12 2024 -0700

    Cleaning up non-const operator() to avoid code duplication (#769)

Expected Behavior Unit tests should all pass.

Code Snippets N/A

System Details (please complete the following information):

• OS: Ubuntu 22.04
• CUDA version: 12.5.1
• g++ version: 11.4.0
• nvcc version: 12.5.82

Additional Context N/A