tenstorrent#25083: SDXL didt tests (tenstorrent#25097)

### What's changed
Implementation of didt conv and matmul unit tests, for cases present in
SDXL.

Tests include:

- `tests/didt/test_sdxl_conv_1280x1280_upsample.py` - containing a call
of ttnn.upsample after which comes a conv call that hangs
- `tests/didt/test_sdxl_conv.py` - contains rest of the conv tests

- `tests/didt/test_sdxl_matmul.py` - contains all matmul tests

### Checklist
- [x] [All post
commit](https://github.com/tenstorrent/tt-metal/actions/runs/16313131229)
CI passes
- [x] [Nightly tt-metal L2
tests](https://github.com/tenstorrent/tt-metal/actions/runs/16304090410)
CI passes

---------

Co-authored-by: ppopovic <ppopovic@tenstorrent.com>

Author: ipotkonjak-tt

.github/workflows/didt-tests.yaml

@@ -60,6 +60,9 @@ jobs:
           pytest tests/didt/test_ff1_matmul.py::test_ff1_matmul -k "without_gelu and 1chips" --didt-workload-iterations 100 --determinism-check-interval 1
           pytest tests/didt/test_ff1_matmul.py::test_ff1_matmul -k "with_gelu and 1chips" --didt-workload-iterations 100 --determinism-check-interval 1
           pytest tests/didt/test_lm_head_matmul.py::test_lm_head_matmul -k "1chips" --didt-workload-iterations 100 --determinism-check-interval 1
+          pytest tests/didt/test_sdxl_conv.py::test_sdxl_conv -k "1chips" --didt-workload-iterations 100 --determinism-check-interval 1
+          pytest tests/didt/test_sdxl_matmul.py::test_sdxl_matmul -k "1chips" --didt-workload-iterations 100 --determinism-check-interval 1
+          pytest tests/didt/test_sdxl_conv_1280x1280_upsample.py::test_sdxl_conv -k "1chips" --didt-workload-iterations 100 --determinism-check-interval 1
       - uses: tenstorrent/tt-metal/.github/actions/slack-report@main
         if: ${{ failure() }}
         with: