Extend TernaryOperatorsShouldNotBeNested with pattern matching

What problem are you trying to solve?

Pattern matching switch expressions can be used to simplify nested ternaries

Describe the solution you'd like

"""
  import java.util.Set;
  import java.util.Arrays;
  import java.util.List;
  import java.util.stream.Collectors;
  class Test {
    public Set<String> makeASet() {
       List<String> s = Arrays.asList("a","b","c","nope");
       return s.stream().map(item -> item.startsWith("a") ? "a" : item.startsWith("b") ? "b" : "nope").collect(Collectors.toSet());
    }
  }
  """,
"""
  import java.util.Set;
  import java.util.Arrays;
  import java.util.List;
  import java.util.stream.Collectors;
  class Test {
    public Set<String> makeASet() {
       List<String> s = Arrays.asList("a","b","c","nope");
       return s.stream().map(item ->
        switch (item) {
          case String st && st.startsWith("a") -> "a";
          case String st && st.startsWith("b") -> "b";
          default -> "nope";
        }
       ).collect(Collectors.toSet());
    }
  }
  """

Start by locating the TernaryOperatorsShouldNotBeNested recipe and its existing tests. Read how nested ternary examples are represented, then add coverage for the pattern-matching switch example shown in the issue and run the recipe's test suite to confirm the expected transformation is recognized.