#1351 made `styleStore` initialization asynchronous in
`componentDidMount`. `setStyle` currently treats `toolbar:link`
appearing as the signal that loading is complete, but if the style
network request (`empty-style.json` from jsdelivr) takes over ~1s, the
`toolbar:link` can appear while `styleStore` is still null (because the
request has not finished). Subsequent `saveStyle` calls in tests then
silently do nothing, causing test failures (3 in #2157, and often 20+ on
my machine).
Changes are:
1. Mock the default empty style to avoid slow network E2E failures.
2. Also cap Playwright workers at 4 to avoid overloading Chromium on
high-core machines.
Fixes#2158.
## Launch Checklist
<!-- Thanks for the PR! Feel free to add or remove items from the
checklist. -->
- [x] Briefly describe the changes in this PR.
- [x] Link to related issues.
- [ ] ~~Include before/after visuals or gifs if this PR includes visual
changes.~~
- [ ] ~~Write tests for all new functionality.~~
- [ ] ~~Add an entry to `CHANGELOG.md` under the `## main` section.~~
(only minor test infra fix)
Co-authored-by: liuly <me@liuly.moe>
Co-authored-by: Harel M <harel.mazor@gmail.com>
