Compat suppress min es31 failure tests

Bug: 388318201
Change-Id: I89fa303e2e05d1d0481ffb4d0b2f31fa693da95d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/225374
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: Shrek Shao <shrekshao@google.com>
Commit-Queue: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
diff --git a/webgpu-cts/compat-expectations.txt b/webgpu-cts/compat-expectations.txt
index 877a8bb..ffda853 100644
--- a/webgpu-cts/compat-expectations.txt
+++ b/webgpu-cts/compat-expectations.txt
@@ -98,6 +98,10 @@
 webgpu:api,operation,sampling,anisotropy:anisotropic_filter_mipmap_color:maxAnisotropy=4 [ Skip ]
 webgpu:api,validation,capability_checks,features,texture_formats:check_capability_guarantees:* [ Skip ]
 
+# Failing tests under under minimal ES31 context
+# crbug.com/388318201 Add tag min-es31 once infra change is landed
+webgpu:api,operation,render_pass,storeOp:render_pass_store_op,color_attachment_only:colorFormat="bgra8unorm";storeOperation="discard" [ Failure ]
+webgpu:api,operation,render_pass,storeOp:render_pass_store_op,color_attachment_only:colorFormat="bgra8unorm";storeOperation="store" [ Failure ]
 
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 # Temporary Skip Expectations