[compiler] Fix visitors to emit the correct kind

Our passes aren't sequenced such that we could observe this bug, but this retains the proper terminal kind for pruned-scopes in mapTerminalSuccessors.

[ghstack-poisoned]

compiler/packages/babel-plugin-react-compiler/src/HIR/visitors.ts

@@ -856,7 +856,7 @@ export function mapTerminalSuccessors(
       const block = fn(terminal.block);
       const fallthrough = fn(terminal.fallthrough);
       return {
-        kind: "scope",
+        kind: terminal.kind,
         scope: terminal.scope,
         block,
         fallthrough,