[Gardening]: REGRESSION (268354@main): [ macOS wk1 ] fast/hidpi/filte…

…rs-drop-shadow.html is a consistent failure with image diff

https://bugs.webkit.org/show_bug.cgi?id=270380
rdar://123922421

Unreviewed test gardening.

Adding test expectation

* LayoutTests/platform/mac-wk1/TestExpectations:

Canonical link: https://commits.webkit.org/275575@main

LayoutTests/platform/mac-wk1/TestExpectations

@@ -2812,3 +2812,5 @@ webkit.org/b/270310 [ Sonoma+ ] imported/w3c/web-platform-tests/html/semantics/i
 [ Sonoma+ ] imported/blink/compositing/will-change/stacking-context-creation.html [ ImageOnlyFailure ]
 [ Sonoma+ ] imported/w3c/web-platform-tests/css/css-transforms/transform3d-preserve3d-001.html [ ImageOnlyFailure ]
 [ Sonoma+ ] imported/w3c/web-platform-tests/css/css-transforms/ttwf-css-3d-polygon-cycle.html [ ImageOnlyFailure ]
+
+webkit.org/b/270380 [ Ventura+ ] fast/hidpi/filters-drop-shadow.html [ ImageOnlyFailure ]