Generate type-safe barrier in method body

In cases when signature of special bridge is the same as current method,
but type is not 'Any?'.

Also there is tiny optimization:
only null check needed if value parameter type is mapped to Object,
but it's not nullable.

 #KT-9973 Fixed

compiler/testData/codegen/bytecodeText/builtinFunctions/genericParameterBridge/mutableCollection.kt

@@ -23,3 +23,5 @@ abstract class A2 : MutableCollection<String> {
 // 1 public final bridge contains\(Ljava/lang/Object;\)Z
 // 1 public final bridge remove\(Ljava/lang/Object;\)Z
 // 1 INVOKEVIRTUAL A[0-9]\.contains \(Ljava/lang/String;\)Z
+/* 2 INSTANCEOF: one for 'remove', one for 'contains' type-safe bridges */
+// 2 INSTANCEOF