Keep $continuation in LVT

in case of suspend functions and `this` is case of lambdas, since they
are used in async stack trace generation.
Update tests.
 #KT-40661 Open

compiler/testData/checkLocalVariablesTable/completionInSuspendFunction/nonStaticStateMachine.kt

@@ -5,6 +5,7 @@ class A {
     suspend fun foo1(l: Long) {
         foo()
         foo()
+        val dead = l
     }
 }
 
@@ -12,5 +13,5 @@ class A {
 // VARIABLE : NAME=this TYPE=LA; INDEX=0
 // VARIABLE : NAME=l TYPE=J INDEX=1
 // VARIABLE : NAME=$completion TYPE=Lkotlin/coroutines/Continuation; INDEX=3
-// VARIABLE : NAME=$continuation TYPE=Lkotlin/coroutines/Continuation; INDEX=5
-// VARIABLE : NAME=$result TYPE=Ljava/lang/Object; INDEX=4
+// VARIABLE : NAME=$continuation TYPE=Lkotlin/coroutines/Continuation; INDEX=7
+// VARIABLE : NAME=$result TYPE=Ljava/lang/Object; INDEX=6