Disable tests failing Linux MSAN bot

Bug: 356041709
Change-Id: I6bc48b18724f30623a73479221da37a4092eb59e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5741821
Reviewed-by: Daniil Sakhapov <sakhapov@google.com>
Auto-Submit: Rune Lillesveen <futhark@chromium.org>
Commit-Queue: Daniil Sakhapov <sakhapov@google.com>
Cr-Commit-Position: refs/heads/main@{#1334113}

third_party/blink/web_tests/TestExpectations

@@ -7527,3 +7527,7 @@ crbug.com/353746882 external/wpt/fs/FileSystemFileHandle-cross-primitive-locking
 # Gardener 2024-07-24
 crbug.com/40186254 fast/events/touch/gesture/gesture-tap-reset-selection-range.html [ Failure Pass Timeout ]
 crbug.com/40186254 fast/events/touch/gesture/long-press-drag-drop-touch-editing-combined-in-iframe.html [ Failure Pass Timeout ]
+
+# Gardener 2024-07-29 Flaky Linux MSAN failures
+crbug.com/356041709 [ Linux ] http/tests/devtools/elements/highlight/highlight-css-grid-huge.js [ Pass Crash ]
+crbug.com/356041709 [ Linux ] http/tests/devtools/elements/highlight/highlight-css-persistent-grid-huge.js [ Pass Crash ]