[CI] Ignore ruff D209, rejoin the docstrings it split, and silence incompatible-rule warnings (#57212)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

tests/kernels/quantization/test_int8_kernel.py

@@ -30,8 +30,7 @@ if current_platform.is_cuda_alike() and not current_platform.has_device_capabili
 
 def native_w8a8_per_token_matmul(A, B, As, Bs, output_dtype=torch.float16):
     """Matrix multiplication function that supports per-token input
-    quantization and per-column weight quantization
-    """
+    quantization and per-column weight quantization"""
     A = A.to(torch.float32)
     B = B.to(torch.float32)
 
@@ -54,8 +53,7 @@ def native_w8a8_per_token_matmul(A, B, As, Bs, output_dtype=torch.float16):
 
 def torch_w8a8_per_column_moe(a, w1, w2, w1_s, w2_s, topk, topk_weight, topk_ids):
     """This function performs fused moe with per-column int8 quantization
-    using native torch.
-    """
+    using native torch."""
     B, D = a.shape
     # Perform per-token quantization
     a_q, a_s = per_token_quant_int8(a)