chore(locales): regenerate locale keys list

[scavienger]

What does this PR do?

Regenerates EllesmereUILocales/_keys.txt via .tools/extract-locale-keys.sh.

Follow-up to #2476 (feat(resourcebars): per-spec Hash Lines for Health and Power bars), which added EllesmereUI.L("(Ex: 50000)") without updating the key list, causing the locale-keys CI job to fail on all subsequent PRs.

How was it tested?

Ran bash .tools/extract-locale-keys.sh and verified clean CI expectation.

Checklist

• New settings default OFF (no behavior change without opt-in) (N/A)
• Zero cost while disabled: no events registered, no polling, no hooks doing work, no frames built (N/A)
• Cheap while enabled: event-driven (no polling, no timer-based logic, no per-frame allocations) (N/A)
• No writes onto Blizzard-owned frames (weak-table pattern used); HookScript/hooksecurefunc only, never SetScript on Blizzard frames (N/A)
• Tested in-game on live; no version gates or pre-Midnight APIs added (N/A)

[scavienger]

This is the same PR as #2601. I'm going to close this PR and hope the PR approves.