added 'hasErrorInConstrainingTypes'

not to report type inference error in such cases

compiler/testData/diagnostics/tests/inference/hasErrorInConstrainingTypes.kt

@@ -0,0 +1,8 @@
+package n
+
+fun foo<T>(<!UNUSED_PARAMETER!>t<!>: T, <!UNUSED_PARAMETER!>t1<!>: T) {}
+
+fun test() {
+    //no type inference error
+    foo(<!UNRESOLVED_REFERENCE!>aaab<!>, <!UNRESOLVED_REFERENCE!>bbb<!>)
+}