[tiensonqin]

Returning to previously visited virtual rows could leave Apple viewports showing placeholders. onDisappear removes a slot from the visible-range tracker, but SwiftUI can reuse its previous geometry and skip another callback. Restore its last visibility registration on appearance so repeated distant scrolls request their rows again.

Android dialogs and sheets also start separate semantics roots: the activity's testTagsAsResourceId setting does not reach their controls. Export each LUI accessibility identifier with its own resource-ID semantics so native automation can locate fields, switches and buttons inside modal windows.

Validation:

• Added an iOS runtime check that scrolls a 10,000-slot native list to the end and back twice, without XCTest.
• Native mobile table/gallery checks scroll through 10,001 results, return to the first row, and edit a distant cell; core gate: 1,050 tests passed.
• Added downstream Android device tests for actual accessibility resource IDs in both dialog and sheet windows. Both failed before the Android change; all 11 native-surface tests pass afterward.
• Android fix resolves the CI smoke failure where Graph name was visible but its field.graph-name selector could not be found.