[MetaSchedule]Add a testcase for padded conv2d in meta_schedule

[YXY-0922]

For a conv2d workload that requires padding:

Details

Test Script: test_padded_conv
Location: tests/python/meta_schedule/test_meta_schedule_schedule_rule_mlt_tc.py

mod = te.create_prim_func(
    te_workload.conv2d_nhwc(
        1,
        224,
        224,
        3,
        64,
        7,
        2,
        3,
        in_dtype="float16",
        out_dtype="float32",
    )
)

This configuration sets up a conv2d workload where the product of reduce axes is 147. Therefore, padding is needed when applying the rule multi_level_tiling_tensorcore.

[cbalint13]

LGTM

[cbalint13]

@YXY-0922 ,

Thank you very much for the fix and the test case assurance !

This is merged.