Fix RN experiement in unit tests

[EdmondChuiHW]

Summary

Fix the existing unit test failure.

Will unblock running unit tests in this repo as a GitHub Action in #105.

Test plan

npm run build && npm run unittest

> prebuild
> gn gen out/Default

Done. Made 1158 targets from 417 files in 496ms

> build
> autoninja -C out/Default

ninja: Entering directory `out/Default'
[367/367] STAMP obj/generate_devtools_grd.stamp

> unittest
> vpython3 scripts/test/run_unittests.py --no-text-coverage

Using Chromium binary (/Users/edmondc/ws/rn-chrome-devtools-frontend__workspace/rn-chrome-devtools-frontend/third_party/chrome/chrome-mac/Google Chrome for Testing.app/Contents/MacOS/Google Chrome for Testing)
Running tests from /Users/edmondc/ws/rn-chrome-devtools-frontend__workspace/rn-chrome-devtools-frontend

Using karma config /Users/edmondc/ws/rn-chrome-devtools-frontend__workspace/rn-chrome-devtools-frontend/out/Default/gen/test/karma.conf.js
29 08 2024 03:27:53.036:INFO [karma-server]: Karma v6.4.0 server started at http://localhost:9876/
29 08 2024 03:27:53.038:INFO [launcher]: Launching browsers BrowserWithArgs with concurrency unlimited
29 08 2024 03:27:53.041:INFO [launcher]: Starting browser Chrome
29 08 2024 03:27:54.280:INFO [Chrome Headless 124.0.0.0 (Mac OS 10.15.7)]: Connected on socket qPkG9WxuG5SbKoLGAAAB with id 54029838
==== SKIP: ApplicationPanelSidebar/without tab target/[crbug.com/1472237] shows cookies for all frames

==== SKIP: ApplicationPanelSidebar/without tab target/[crbug.com/1472651] shows shared storages and events for origins using shared storage

==== SKIP: ApplicationPanelSidebar/with tab target/[crbug.com/1472237] shows cookies for all frames

==== SKIP: ApplicationPanelSidebar/with tab target/[crbug.com/1472651] shows shared storages and events for origins using shared storage

==== SKIP: [crbug.com/1473557]: IDBDatabaseView/renders with a title and top-level site

==== SKIP: [crbug.com/1473557]: IDBDatabaseView/renders with an opaque storage key

==== SKIP: [crbug.com/1473557]: IDBDatabaseView/renders with a storage bucket

==== SKIP: [crbug.com/1473557]: IDBDatabaseView/renders buttons

==== SKIP: InterestGroupStorageView/[crbug.com/1473557]: updates sidebarWidget upon receiving cellFocusedEvent when InterestGroupGetter succeeds

==== SKIP: InterestGroupStorageView/[crbug.com/1473557]: updates sidebarWidget upon receiving cellFocusedEvent when InterestGroupDetailsGetter failsupdates sidebarWidget upon receiving cellFocusedEvent when InterestGroupDetailsGetter fails

==== SKIP: InterestGroupStorageView/[crbug.com/1473557]: clears sidebarWidget upon clearEvents

==== SKIP: MismatchedPreloadingGrid/[crbug.com/1473557]: renderes no diff in URL

==== SKIP: LighthousePanel/without tab taget/[crbug.com/326214132] restores the original URL when done

==== SKIP: LighthousePanel/without tab taget/[crbug.com/326214132] waits for main taget to load before linkifying

==== SKIP: LighthousePanel/with tab taget/[crbug.com/326214132] restores the original URL when done

==== SKIP: LighthousePanel/with tab taget/[crbug.com/326214132] waits for main taget to load before linkifying

==== SKIP: JSONEditor/Display command written in editor inside input bar/[crbug.com/1484534]: should not display the command into the input bar if the command is empty string

==== SKIP: TimelineFlameChartView/[crbug.com/1492405] Shows the network track correctly

==== SKIP: Dialog/positioning/[crbug.com/1441801]: sets the max width and height correctly when the dialog's content dimensions exceed the viewport and the dialog is displayed as a modal

SUCCESS: 5050 passed (19 skipped)

Upstreaming plan

• This commit should be sent as a patch to the upstream devtools-frontend repo. I've reviewed the contribution guide.
• This commit is React Native-specific and cannot be upstreamed.