fix[frontend](): added missing confirm modal and language keys

[AlexSanchez-bit]

No description provided.

[github-actions]

✅ AI review — Clean

No issues detected in this diff.

✅ architecture (gemini-3-flash-lite) — clean

Summary: Replaced native browser confirm dialogs with a consistent ConfirmDialog component across alerting, tagging, and incident modules.

No findings.

✅ bugs (gemini-3-flash-lite) — clean

Summary: Replaced browser confirm dialogs with custom ConfirmDialog components across multiple features.

No findings.

✅ security (gemini-3-flash-lite) — clean

Summary: Refactored delete confirmation dialogs across multiple features; no security vulnerabilities or information disclosure identified.

No findings.

🟢 go-deps — up to date

No pending Go dependency updates.