Devtools: Temporarily disable network tests for landing A11y Changes

This updates a temporarily disabled network tool test to expect
timeouts. The test will be rebaselined and re-enabled after
has landed and DEPS has rolled


https: //chromium-review.googlesource.com/c/devtools/devtools-frontend/+/1881592
Bug: 963183
Change-Id: Id1abfbc2b032c75d37011991a61912f8015a48c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893508Reviewed-by: Lorne Mitchell <lomitch@microsoft.com>
Commit-Queue: Brandon Goddard <brgoddar@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#711510}

third_party/blink/web_tests/TestExpectations

@@ -5752,6 +5752,6 @@ crbug.com/963183 http/tests/devtools/components/viewport-datagrid.js [ Pass Fail
 
 # Temporarily disabled for landing datagrid Changes in devtools
 crbug.com/963183 http/tests/devtools/network/network-close-request-view.js [ Pass Failure ]
-crbug.com/963183 http/tests/devtools/network/network-cookies-pane.js [ Pass Failure ]
+crbug.com/963183 http/tests/devtools/network/network-cookies-pane.js [ Pass Timeout Failure ]
 crbug.com/963183 http/tests/devtools/network/preview-searchable.js [ Pass Failure ]
 crbug.com/963183 http/tests/devtools/network/waterfall-header-height-updates.js [ Pass Failure ]