[kavemang]

What this PR does

Hydration tracking currently says “Nothing is synced” on Apple even though enabling it also allows Apple Health water imports on iOS. Replace that description with local-storage copy and explain the read-only Health import beneath the iOS switch, including the connection/read-access prerequisites. Drinks recorded in NOOP are not written to Health.

Both descriptions cover all 10 Apple catalog locales and use existing design tokens. macOS does not show the iOS-only Health note. No import behavior or setting changes. Android is unchanged because this report concerns Apple Health; the active Android Settings localization work in #2498 is left to its author. This covers only the hydration row of the broader issue.

Type of change

• Bug fix

How it was tested

• Diff-scoped i18n audit, doc-comment hygiene, JSON catalog parse/comparison and whitespace checks pass. Only the replaced description and two new entries differ in the catalog.
• Linux Swift syntax parse passes; it does not validate SDK typing. Exact-head CI passes: both Apple SDK builds, Tools, i18n, hygiene and Android checks (6/6). Universal macOS build and StrandTests passed: 2,269 tests, two skipped, zero failures. iOS Simulator SDK build and String Catalog compilation passed.
• Full local Tools Python suite passed: 338 tests, zero failures. Tools CI includes 50 parity acceptance, 2 R-R contract, 153 core Tools and 234 linux-capture tests. Android APK checks also pass; Android unit-test result was FROM-CACHE, with no Android files changed. No new test added for a reversible copy change.
• Draft pending manual iOS/macOS layout and translation review. No device, Health permission/import or hardware interaction performed; import logic is unchanged.

Checklist

• UI uses existing design tokens
• No generated output, secrets, storage or BLE changes
• Follows contributor conventions

Related issues

Refs #2465