Do not suggest computeIfAbsent <=> putIfAbsent conversions if value could be nullable

Fixes IDEA-215931 Incorrect "Excessive lambda usage" warning

GitOrigin-RevId: 13fa8f5d7d283cd7a208053ed0271a644b713391

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/excessiveLambdaUsage/beforeComputeIfAbsentPossiblyNullable.java

@@ -0,0 +1,8 @@
+// "Use 'putIfAbsent' method without lambda" "false"
+import java.util.Map;
+
+class Test {
+    public void test(Map<String, String> map, String key, String value) {
+        map.computeIfAbsent(key, k <caret>-> value);
+    }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/explicitArgumentCanBeLambda/beforeMapPutIfAbsentPossiblyNullable.java

@@ -0,0 +1,12 @@
+// "Use 'computeIfAbsent' method with functional argument" "false"
+
+import java.util.Map;
+
+class Test {
+  public void test(Map<String, List<Integer>> map, String key) {
+    map.putIfAbsent(key, createList<caret>());
+    map.get(key).add(0);
+  }
+
+  private native List<Integer> createList();
+}