Follow-up from "Splits out SAST reports to a new module"

The following discussion from !14299 (merged) should be addressed:

• @pgascouvaillancourt started a discussion: (+1 comment)

  What would you think of adding a getter that returns all reports, it would let us simplify some of these getters:

  export const allReports = ({ sastContainer, dast, dependencyScanning }, _getters, { sast }) => [
    sast,
    sastContainer,
    dast,
    dependencyScanning,
  ];
  
  export const summaryCounts = (_state, getters) =>
  getters.allReports.reduce(

  We could leverage some Array methods to replace some of the conditions below, while this might have a slight performance cost, I feel like it would nicely improve maintainability. eg:

  export const areReportsLoading = (_, getters) =>
    getters.allReports.some(({ isLoading }) => isLoading);
  
  export const allReportsHaveError = (_, getters) =>
    getters.allReports.every(({ hasError }) => hasError);

  Although, this comment is probably out-of-scope for this MR, we could probably address it in a follow up MR if you think it's worth the shot.