lvti: forbid var/explicit type mix

don't treat var as explicit type

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting11/MixedVarAndExplicitTypesInLambdaDeclaration.java

@@ -0,0 +1,10 @@
+interface I {
+  void m(int i, int j);
+}
+
+class Main {
+  void foo() {
+    I in = <error descr="Cannot mix 'var' and explicitly typed parameters in lambda expression">(var i, int j)</error> -> {};
+    I in1 = (var i, <error descr="Cannot resolve symbol 'j'">j</error><error descr="Identifier expected">)</error> -> {};
+  }
+}