Fix Mosh saved password prompt matching

[binaricat]

Summary

• align Mosh saved-password prompt detection with the SSH keyboard-interactive rules
• support localized password prompts such as Chinese "密码："
• keep OTP/MFA prompts such as "One-time password:" from receiving the saved password
• add Mosh handshake tests for both cases

Fixes #989.

Validation

• node --test electron/bridges/terminalBridge.moshHandshakeSession.test.cjs electron/bridges/terminalBridge.bareMoshClient.test.cjs electron/bridges/sshAuthHelper.kbdInteractive.test.cjs
• npx eslint electron/bridges/terminalBridge.cjs electron/bridges/terminalBridge.moshHandshakeSession.test.cjs (project config ignores these CJS files; no errors)
• npm test

[binaricat]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 6a8693d3d5

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[binaricat]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Another round soon, please!

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

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[binaricat]

根据 issue 作者后续反馈，这个 PR 的判断方向不对，先关闭；会基于新的复现原因另开 PR 处理。