维护者确认: #1500 fix(mobile): clarify queued message status

PR [#1500](https://github.com/makecindy/cindy/pull/1500) 命中 product 触发（修改了 Mobile UI 路径），需要维护者确认后才能合并。

**触发原因**: 命中 UI 路径(apps/mobile/src/__tests__/sendingQueueBadge.test.ts / apps/mobile/src/session/PendingSendBubble.tsx)

**确认方式**: 在 PR 上直接 Approve；需要修改请 Request Changes，作者改完后重新 Approve 即放行。

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关联 PR:#1500(作者 @Coooder-Crypto);本 issue 由 review-pr 流程自动创建,用于先讨论该 PR 涉及的产品 / UI 变更,维护者确认后 PR 会恢复推进。

Open PR #1500 and review the mobile UI changes in apps/mobile/src/session/PendingSendBubble.tsx alongside apps/mobile/src/__tests__/sendingQueueBadge.test.ts. Check that the queued message status is clearly represented and that the test matches the intended behavior. Done means approving the PR or requesting changes there.

Written by the indexing model from the issue text.