[grad test] relax tolerance

[kshitij12345]

Ref: #2363

[kshitij12345]

Need to relax more -

=========================== short test summary info ============================
FAILED thunder/tests/test_grad.py::test_vjp_correctness_softsign_nvfuser_cuda_thunder.dtypes.float64 - AssertionError: Scalars are not close!

Expected 0.018125936040412825 but got 0.018194965055091755.
Absolute difference: 6.902901467892991e-05 (up to 1e-05 allowed)
Relative difference: 0.0038083006872045517 (up to 1e-05 allowed)
FAILED thunder/tests/test_grad.py::test_vjp_correctness_normalize_nvfuser_cuda_thunder.dtypes.float64 - AssertionError: Scalars are not close!

Expected 1.6720222046537816 but got 1.6720607368208813.
Absolute difference: 3.8532167099702974e-05 (up to 1e-05 allowed)
Relative difference: 2.304524843776322e-05 (up to 1e-05 allowed)
FAILED thunder/tests/test_grad.py::test_vjp_correctness_abs_nvfuser_cuda_thunder.dtypes.float64 - AssertionError: Scalars are not close!

Expected 1.6447549289287395 but got 1.644292826080398.
Absolute difference: 0.00046210284834158344 (up to 1e-05 allowed)
Relative difference: 0.0002809554421840583 (up to 1e-05 allowed)
= 3 failed, 733 passed, 55 skipped, 23 xfailed, 15 xpassed, 92480 warnings in 830.74s (0:13:50) =

CI - https://dev.azure.com/Lightning-AI/lightning/_build/results?buildId=238962&view=logs&j=83d7ca60-c2d2-50c8-1ed9-9f99750fc4f0&t=d88aa08c-a7b7-5504-bdb7-50942829cc54&l=2233

[kshitij12345]

Still more tol required

=========================== short test summary info ============================
FAILED thunder/tests/test_grad.py::test_vjp_correctness_softsign_nvfuser_cuda_thunder.dtypes.float64 - AssertionError: Scalars are not close!

Expected 0.28762750612550503 but got 0.2877591463516204.
Absolute difference: 0.0001316402261153926 (up to 0.0001 allowed)
Relative difference: 0.0004576760682198175 (up to 0.0001 allowed)
FAILED thunder/tests/test_grad.py::test_vjp_correctness_abs_nvfuser_cuda_thunder.dtypes.float64 - AssertionError: Scalars are not close!

Expected -0.39983096480067737 but got -0.40020568936399437.
Absolute difference: 0.0003747245633169971 (up to 0.0001 allowed)
Relative difference: 0.0009372074609173999 (up to 0.0001 allowed)
= 2 failed, 734 passed, 55 skipped, 23 xfailed, 15 xpassed, 92918 warnings in 830.85s (0:13:50) =

https://dev.azure.com/Lightning-AI/lightning/_build/results?buildId=238966&view=logs&j=83d7ca60-c2d2-50c8-1ed9-9f99750fc4f0&t=d88aa08c-a7b7-5504-bdb7-50942829cc54&l=2137

[t-vi]

The funny part is that it's only on PT nightly. Maybe an upstream thing, even?

[kshitij12345]

Ping @t-vi for stamping

[t-vi]

Thank you @kshitij12345