Refactor listItems computed for clarity

What does this MR do and why?

This MR implements a suggestion from !109508 (comment 1249635857)

Suggestion(not a blocker) For clarity I think the sortedDraft count can be moved at the beginning of the computed prop for better readability

    const sortedDraftCount = this.sortedDrafts.length - 1;
      return this.sortedDrafts.map((item, index) => ({
        text: item.id.toString(),
        action: () => {
          this.onClickDraft(item);
        },
        last: index === sortedDraftCount,
        ...item,
      }));
    },

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