Frontend: fixed explicit receiver kind for dynamic call with implicit dispatch receiver.

Additionally added tests for other cases.

compiler/testData/resolvedCalls/dynamic/hasBothDispatchAndExtensionReceivers.kt

@@ -0,0 +1,9 @@
+class A {
+    fun dynamic.foo() {}
+}
+
+fun bar(a: A, b: dynamic) {
+    with (a) {
+        b.<caret>foo()
+    }
+}