Fix S3242: Do not suggest ICollection<KVP<TKey, TValue>>

[Evangelink]

The current implementation of the rule is currently raising quite a lot of FP and we should came up with some ideas about tuning the rule to Kill the Noise.

For example:
1/ Do not suggest a non-generic base type (i.e. not IEnumerable over IEnumerable<T>).

2/ Do not suggest ICollection<KeyValuePair<TKey, TValue>> over IDictionary<TKey, TValue>.

Let's have a look at sonarcloud and peach to try to find the right patterns.

[Evangelink]

I cannot reproduce the issue (neither the non-generic nor the ICollection<KeyValuePair<TKey, TValue>>).

[michalb-sonar]

Re 2)

public void Test_03(Dictionary<string, string> foo)
{
    var x = foo.Count;
}