Playwright tests are flaky

[jamesmaa]

This seems to have been happening occasionally before the recommended settings PR. The earliest instance I could find was from #1476's run

https://github.com/yomidevs/yomitan/actions/runs/11265422024/job/31327215970

Neighboring commits on master

[jamesmaa]

Update: after some observation it is observed that the action of trying to load json in the playwright tests causes other file load operations to fail. For some reason this issue is fixed when tracing is turned enabled.

Our current hypothesis is that the performance impact of enabling tracing causes more spacing between multiple file load operations, which allows some hidden shared resource to not enter a pathological state. However, we're not prioritizing investigating this further at this point.

Our current remediation is to avoid too many file loads in our playwright tests. For the recommended settings PR, we will move the logic of loading the json outside the initialization path and make it lazy load on interact, thereby removing it from our existing playwright coverage.