gpu: Mark webgl2 conformance test flake on Mac AMD with ANGLE Metal

Bug: 1369290
Change-Id: Ic16c5b2f8915859490704701c138e136a5462160
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3925003
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Owners-Override: Sunny Sachanandani <sunnyps@chromium.org>
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1052753}

content/test/gpu/gpu_tests/test_expectations/webgl2_conformance_expectations.txt

@@ -362,6 +362,7 @@ crbug.com/angleproject/7209 [ mac passthrough angle-metal amd ] deqp/functional/
 crbug.com/angleproject/7209 [ mac passthrough angle-metal amd ] deqp/functional/gles3/transformfeedback/random_separate_points.html [ Failure ]
 crbug.com/angleproject/7425 [ mac passthrough angle-metal amd ] deqp/functional/gles3/texturespecification/texstorage3d_format_depth_stencil.html [ Failure ]
 crbug.com/1355825 [ mac passthrough angle-metal amd ] deqp/functional/gles3/texturespecification/texstorage2d_format_2d_00.html [ Failure ]
+crbug.com/1369290 [ mac passthrough angle-metal amd ] deqp/functional/gles3/texturefiltering/2d_array_combinations_05.html [ RetryOnFailure ]
 
 # Metal Intel
 crbug.com/angleproject/6430 [ mac passthrough angle-metal intel ] conformance2/textures/canvas/tex-2d-rgb16f-rgb-float.html [ Failure ]