software/theia: Make resiliency promises more robust

Status Job ID Name Coverage
  External
canceled SlapOS.SoftwareReleases.IntegrationTest-XavierTheiaSimplifyEmbeddedSr.Python2

66:48:53

passed SlapOS.SoftwareReleases.IntegrationTest-XavierTheiaSimplifyEmbeddedSr.Python3

03:17:44