Temporarily disable modules-load tests

In
https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/1934218
we are adding an extra module to these panels. Disable the test for now
to land the front_end CL. Once DevTools is rolled into Chromium, the
test expectation will be updated and the test will be re-enabled.

Bug: 1006759
Change-Id: I7dd5393a884d9f4559d8b7f53d5dc7472a4cea76
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1940327
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Auto-Submit: Tim van der Lippe <tvanderlippe@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#719571}

third_party/blink/web_tests/TestExpectations

@@ -5906,3 +5906,7 @@ crbug.com/833100 [ Mac ] external/wpt/battery-status/battery-full-manual.https.h
 crbug.com/1006759 http/tests/devtools/sources/debugger-ui/continue-to-location-markers-in-top-level-function.js [ Pass Failure ]
 crbug.com/1006759 http/tests/devtools/sources/debugger-ui/continue-to-location-markers.js [ Pass Failure ]
 crbug.com/1006759 http/tests/devtools/sources/debugger-ui/popover-for-spread-operator.js [ Pass Failure ]
+
+# Disabled for three-way merge after https://crrev.com/c/devtools/devtools-frontend/+/1934218 is submitted
+crbug.com/1006759 http/tests/devtools/modules-load-network.js [ Pass Failure ]
+crbug.com/1006759 http/tests/devtools/modules-load-source.js [ Pass Failure ]