RCS1031 conflicts with RCS1111

**Product and Version Used**:
Roslynator 2.3.0
Visual Studio 2017, 15.9.19
**Steps to Reproduce**:
Consider a trivial switch-case where sections have multiple statements:
```csharp
public void TestSwitch(int param)
{
switch (param)
{
case 1:
Console.WriteLine("a");
break;
case 2:
{
Console.WriteLine("b");
break;
}
}
}
```
Also consider that both RCS1031 and RCS1111 are included into the ruleset.
Case 1 will cause RCS1111 requiring to add the braces, but case 2 will cause RCS1031 requiring to remove the braces.
**Actual Behavior**:
RCS1031 confilcts with RCS1111
**Expected Behavior**:
RCS1031 and RCS1111 have same opinion about the necessity of braces in this case.