[fix] Fixes to whois/estimated locations suggested by different AI models

[nemesifier]

Related to #1196, contains other changes suggested by different AI models, @pandafy @DragnEmperor feel free to pick what you think works.

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📝 Walkthrough

Walkthrough

The pull request addresses data integrity and robustness improvements across the WHOIS service integration. Changes include: deduplicating field tracking entries when Device initialization occurs multiple times with WHOIS enabled; enforcing timezone-aware datetime requirements in the WHOIS age calculation method; making coordinates and timezone handling more graceful when data is missing; and refining task failure notifications to only trigger under specific retry exhaustion conditions or certain error types rather than on every failure.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

🚥 Pre-merge checks | ✅ 1 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description is incomplete. It lacks a formal description of changes, does not explicitly reference which checklist items were completed, and does not explain the specific fixes or their rationale.	Provide a detailed description of the fixes, explain why they were made, confirm which checklist items are complete, and clarify what reviewers should evaluate.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main changes—fixes to whois/estimated locations based on AI model suggestions—and aligns well with the changeset modifications across multiple files.

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[nemesifier]

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