Fix S2368 FP: Do not raise on extension methods when "this" is multidimensional array

[gregory-paidis-sonarsource]

Description

More details can be found on this community ticket

Repro steps

public static void MatrixForEach<T>(this T[,] dataMatrix, Action<T, int, int> action) // Do not raise here, this extension method is specifically made for multi-d matrices
{ 
  // code
}

Expected behavior

Do not raise.

Actual behavior

Raises.

[gregory-paidis-sonarsource]

Not sure if this should be marked as FP or Improvement, but the description of a FP is "rule is raising when it should NOT", so I think this should be taken care of as part of a hardening sprint (as we usually do we FP/FNs)