message: bug: corrige le bug de la simulation vide lors du retour depuis une page de doc
diff: import { setSimulationConfig } from 'Actions/actions'
  -import { useEffect, useRef } from 'react'
  +import { useEffect } from 'react'
  import { useDispatch, useSelector } from 'react-redux'
  import { useHistory } from 'react-router'
  import { Company } from 'Reducers/inFranceAppReducer'
  import { RootState, SimulationConfig, Situation } from 'Reducers/rootReducer'
  +import { configSelector } from 'Selectors/simulationSelectors'
  export default function useSimulationConfig(
  config: SimulationConfig | undefined,
  { useExistingCompanyFromSituation = false } = {}
  ) {
  const dispatch = useDispatch()
  - const lastConfig = useRef<SimulationConfig>()
  // TODO : Reading the URL here is buggy because when we do SPA navigation the
  // "location" retrieved at this point is still the previous URL. What we
  // actually need is to have a simulator identifier, which is currently not
  @@ -24,10 +24,10 @@ export default function useSimulationConfig(
  ? getCompanySituation(existingCompany)
  : undefined
  + const lastConfig = useSelector(configSelector)
  useEffect(() => {
  - if (config && lastConfig.current !== config) {
  + if (config && lastConfig !== config) {
  dispatch(setSimulationConfig(config ?? {}, url, initialSituation))
  - lastConfig.current = config
  }
  }, [config, initialSituation])
  }
  