Smart completion to work when some of previous arguments have errors (+ fixed testAfterEmptyArgument broken by previous changes)

idea/idea-completion/testData/smart/PreviousArgError.kt

@@ -0,0 +1,16 @@
+class A
+class B
+class C
+class D
+class E
+
+fun foo(s: String, a: A){}
+fun foo(p: Int, b: B, c: C){}
+fun foo(s: String, d: D, e: E, a: A){}
+
+fun f(pa: A, pb: B, pc: C, pd: D, pe: E) {
+    foo(xxx, pb, <caret>)
+}
+
+// EXIST: pc
+// ABSENT: pa, pb, pd, pe