Fix Japanese translation for slogan to better reflect original meaning

[techfish-11]

Description:

The previous Japanese translation — “私たちが大切にしているのは、あなたのデータではなく、あなたの体験です。” — could be interpreted as “We don’t care about your data,” which isn’t the intended meaning.

Updated it to:

“私たちは、あなたの体験を最優先に考え、プライバシーを尊重します。”

This aligns more closely with the English original “We care about your experience, not your data.” and avoids possible misinterpretation.

Please let me know if you’d like any adjustments.

[Copilot]

Pull request overview

This PR updates the Japanese translation of a key slogan on the Zen Browser homepage to better convey the intended meaning and avoid potential misinterpretation. The previous translation used a literal negative construction that could be misread as dismissive of user data, while the new translation uses positive framing that emphasizes both user experience and privacy respect.

• Updated the Japanese translation to use positive framing rather than negative construction
• Changed from literal translation to more culturally appropriate phrasing
• Maintains the core message about prioritizing user experience and privacy

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