nullity: skip assert statements for local vars - should be possible to detect from usages; use in prams nullification (IDEA-60705)

java/java-tests/testData/codeInsight/nullityinferrer/afterAssertParamNotNull.java

@@ -0,0 +1,14 @@
+import org.jetbrains.annotations.NotNull;
+
+class Test {
+  @NotNull
+  public String noNull(@NotNull String text) {
+    assert text != null;
+    return "";
+  }
+
+  private void foo() {
+    @NotNull String str = "";
+    assert str != null;
+  }
+}

java/java-tests/testData/codeInsight/nullityinferrer/beforeAssertParamNotNull.java

@@ -0,0 +1,11 @@
+class Test {
+  public String noNull(String text) {
+    assert text != null;
+    return "";
+  }
+
+  private void foo() {
+    String str = "";
+    assert str != null;
+  }
+}