Camera Zoom Fixes

[Vetle444]

Description of Change

Fixes three related camera issues affecting barcode scanning and image capture:

1. iOS: Focus locks on startup and never re-adjusts

• Camera was not explicitly setting continuous autofocus mode, causing iOS to lock focus at whatever distance happened to be in the camera's field of view when opened.
• Added SetContinuousAutoFocus() that enables ContinuousAutoFocus + ContinuousAutoExposure on the capture device after session configuration.

2. iOS: Tap-to-focus permanently locks focus

• SetFocusPoint() set AVCaptureFocusMode.AutoFocus (one-shot) and never returned to continuous mode.
• Now observes the adjustingFocus KVO property and restores ContinuousAutoFocus once the one-shot focus completes.

3. Zoom does not trigger refocus (both platforms)

• Neither iOS pinch-to-zoom/slider nor Android pinch-to-zoom triggered any focus re-evaluation after changing zoom level.
• iOS: Re-engages ContinuousAutoFocus on pinch gesture end and after slider zoom changes.
• Android: Triggers a center-point FocusMeteringAction after pinch-to-zoom to re-engage autofocus.

4. Android: Tap-to-focus indicator appears at wrong position

• TouchScaleListener was passing e.RawX/e.RawY (screen-absolute coordinates) instead of e.GetX()/e.GetY() (view-relative coordinates), causing both the metering point and indicator circle to be offset.
• Focus indicator Y-offset used a hardcoded / 1.25f approximation instead of accounting for PreviewView.TranslationY. Unified with iOS to use the same correct formula.

[Copilot]

Pull request overview

This PR addresses camera focus/zoom reliability issues across iOS and Android in the DIPS.Mobile.UI camera APIs (barcode scanning + image capture), with a small SDK bump and changelog entry to ship the fixes.

Changes:

• iOS: ensure continuous autofocus/auto-exposure is enabled on session start and re-engaged after zoom changes; restore continuous AF after tap-to-focus one-shot completes.
• Android: re-engage autofocus after zoom changes; fix tap-to-focus coordinate mapping so the metering point and indicator align with the tapped location.
• Repo metadata: bump .NET SDK version and add a patch changelog entry.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/library/DIPS.Mobile.UI/API/Camera/Shared/iOS/CameraSession.cs	Enables continuous AF/AE on startup and after slider-based zoom changes.
src/library/DIPS.Mobile.UI/API/Camera/Shared/Android/CameraFragment.cs	Triggers a focus/metering action after pinch-to-zoom to re-engage autofocus.
src/library/DIPS.Mobile.UI/API/Camera/Preview/iOS/PreviewView.cs	Re-engages continuous AF after pinch end; restores continuous AF/AE after tap-to-focus via KVO observer.
src/library/DIPS.Mobile.UI/API/Camera/Preview/CameraPreview.cs	Unifies focus-indicator Y-offset calculation across platforms using PreviewView.TranslationY.
src/library/DIPS.Mobile.UI/API/Camera/Preview/Android/PreviewView/PreviewViewHandler.cs	Uses view-relative touch coordinates (GetX/GetY) for tap-to-focus.
global.json	Bumps pinned SDK from 10.0.100 to 10.0.200.
CHANGELOG.md	Adds 56.0.3 entry describing the camera fixes.