java completion: prefer method reference suggestions with exactly matching return type (IDEA-210581)

GitOrigin-RevId: 5522e5c103b72ea9d1a7c9ae860e504b6515b1da

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/completion/normal/PreferQualifiedMethodReferenceOfExpectedType.java

@@ -0,0 +1,7 @@
+class C {
+  void tryToSum() {
+    mapToDouble(<caret>)
+  }
+
+  void mapToDouble(java.util.function.ToDoubleFunction<Double> mapper) {}
+}