Mark only unreachable parts of element if it has reachable parts

like for 'return todo()' mark only 'return'

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/deadCallInReceiver.kt

@@ -0,0 +1,11 @@
+fun test11() {
+    fun Any.bar(<!UNUSED_PARAMETER!>i<!>: Int) {}
+    todo().<!UNREACHABLE_CODE!>bar(1)<!>
+}
+
+fun test12() {
+    fun Any.bar(<!UNUSED_PARAMETER!>i<!>: Int) {}
+    todo()<!UNNECESSARY_SAFE_CALL!>?.<!><!UNREACHABLE_CODE!>bar(1)<!>
+}
+
+fun todo() = throw Exception()