chore: add changeset

Author: wswebcreation

.changeset/implement-web-ignore-regions.md

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+---
+'@wdio/image-comparison-core': minor
+'@wdio/visual-service': minor
+---
+
+## #857 Support ignore regions for web screenshots
+
+Add `ignore` support to all web screenshot methods (`saveScreen`/`checkScreen`, `saveElement`/`checkElement`, `saveFullPageScreen`/`checkFullPageScreen`) so that specified elements can be blocked out during visual comparison. This brings web parity with the native-app ignore-region support that already existed.
+
+### Changes
+
+- **Ignore regions for full-page screenshots** — new `determineWebFullPageIgnoreRegions` function that calculates ignore-region rectangles for full-page screenshots, including a `fullPageCropTopPaddingCSS` correction for mobile scroll-and-stitch scenarios where the address-bar shadow padding shifts element positions
+- **Consolidated `ignoreRegionPadding`** — moved `ignoreRegionPadding` into `BaseWebScreenshotOptions` so it is inherited by all web methods instead of being duplicated per method
+- **Fix `isAndroidNativeWebScreenshot` type** — ensure `nativeWebScreenshot` is always a boolean (was accidentally an object for LambdaTest capabilities), preventing ignore-region DPR scaling failures
+- **Fix viewport rounding for mobile** — restore `Math.round()` in `injectWebviewOverlay` and remove `Math.min` clamping in `getMobileViewPortPosition` to prevent 1-pixel crop shifts during full-page stitching
+- **Fix `scrollElementIntoView` for scrolled pages** — account for `currentPosition` (existing scroll offset) when computing the target scroll position, so elements are scrolled into view correctly when the page is already scrolled
+- **Dismiss Chrome Start Surface on Android** — when Chrome's tab-overview UI blocks the webview overlay, automatically press the Android Back button (up to 4 retries) to restore the active tab before measuring the viewport
+
+# Committers: 1
+
+- Wim Selles ([@wswebcreation](https://github.com/wswebcreation))