Put $completion parameter to LVT

The parameter, unlike other ones, should span the whole method, since
throughout the whole method it has some value and thus should be
visible.

This effectively rolls bb5a99ec back

 #KT-64309 Fixed

compiler/testData/checkLocalVariablesTable/suspendFunctionDeadVariables.kt

@@ -9,5 +9,6 @@ suspend fun test() {
 
 // METHOD : SuspendFunctionDeadVariablesKt.test(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 
+// VARIABLE : NAME=$completion TYPE=Lkotlin/coroutines/Continuation; INDEX=0
 // VARIABLE : NAME=$continuation TYPE=Lkotlin/coroutines/Continuation; INDEX=3
 // VARIABLE : NAME=$result TYPE=Ljava/lang/Object; INDEX=2