Mark more decomp tests as slow (#111524)
Something is broken with automatic slow detection, so let's do it manually
Those tests were previously classified as slow, see:
```
test_decomp.py::TestDecompCUDA::test_quick_core_backward_baddbmm_cuda_float64 SKIPPED [0.0003s] (test is slow; run with PYTORCH_TEST_WITH_SLOW to enable test) [ 53%]
test_decomp.py::TestDecompCUDA::test_quick_core_backward_clamp_max_cuda_float64 SKIPPED [0.0002s] (test is slow; run with PYTORCH_TEST_WITH_SLOW to enable test) [ 53%]
test_decomp.py::TestDecompCUDA::test_quick_core_backward_clamp_min_cuda_float64 SKIPPED [0.0002s] (test is slow; run with PYTORCH_TEST_WITH_SLOW to enable test) [ 53%]
```
from https://ossci-raw-job-status.s3.amazonaws.com/log/17792633247
Pull Request resolved: https://github.com/pytorch/pytorch/pull/111524
Approved by: https://github.com/kit1980, https://github.com/izaitsevfb, https://github.com/huydhn
