src/github/pullRequestModel.ts:1453

• While this refactoring improves code quality by eliminating duplicate comment parsing, it does not fully address issue #8445. The reported problem is that the "Refresh Pull Request Comments" command doesn't work. The command handler (in commands.ts line 2002) calls pullRequest.initializeReviewThreadCache() without awaiting it, and the changes in this PR don't modify the command handler. Additionally, to fully refresh comments, the command may need to call initializeReviewThreadCacheAndReviewComments() instead of just initializeReviewThreadCache(), to ensure both the thread cache and the comments property are updated. Consider updating the command handler as well to complete the fix for issue #8445.

	async initializeReviewThreadCacheAndReviewComments(): Promise<void> {
		const threads = await this.initializeReviewThreadCache();

		this.comments = threads.map(node => node.comments)
			.reduce((prev, curr) => prev.concat(curr), [])
			.sort((a: IComment, b: IComment) => {
				return a.createdAt > b.createdAt ? 1 : -1;
			});
	}