Add checkLaunchServerErrorShot

[Oxypetalum7]

Issue

• close #1246

Overview (Required)

• Add StaffScreenTest#checkLaunchServerErrorShot()
  • Add sessionsApiClient, fakeSessionsApiClient , ServerStatusEnum, setupServer() at StaffScreenRobot

[github-actions[bot]]

Snapshot diff report	File name	Image
StaffScreenTest.chec kLaunchServerErrorSh ot_compare.png

[github-actions[bot]]

Test Results

216 tests   216 :heavy_check_mark:  8m 37s :stopwatch:   11 suites      0 :zzz:   11 files        0 :x:

Results for commit f9638810.

:recycle: This comment has been updated with latest results.