performance issue: do not trigger unnecessarily graphql/rdf queries (i.e. preview)

[Rdataflow]

Describe the bug
Calling up the preview page triggers unecessarily graphql and subsequently RDF queries. 👀

To Reproduce
Steps to reproduce the behavior:

1. Go to https://int.visualize.admin.ch/browse?dataset=https%3A%2F%2Fenvironment.ld.admin.ch%2Ffoen%2Ffab_forestry_normalized%2F16&dataSource=Int&debug__flag=true
2. Click on debug tool
3. See list of triggered queries with redundant information or even queries / answears out of scope. (i.e. List of published cubes, while previewing )
   

Expected behavior
Trigger the relevant queries only avoiding the unnecessary ones. This helps to offload the endpoint and gain speed at the same time...

Environment (please complete the following information):

• Visualize environment and version: TEST v3.22.7 (9e9daeb)

Additional context

• All the needed information is queried already in DataCubeMetadata and DataCubePreview.
• Thus it's unnecessary to fire the following queries
  - Themes (whole list of Themes not needed here)

  visualization-tool/app/graphql/query-hooks.ts

  Line 1533 in 28b8e9a

  export function useThemesQuery(options: Omit<Urql.UseQueryArgs<ThemesQueryVariables>, 'query'> = {}) {

  
  - Organizations (whole list of Organizations not needed here)

  visualization-tool/app/graphql/query-hooks.ts

  Line 1545 in 28b8e9a

  export function useOrganizationsQuery(options: Omit<Urql.UseQueryArgs<OrganizationsQueryVariables>, 'query'> = {}) {

  
  - DataCubes (whole list of Published DataCubes not needed here)

  visualization-tool/app/graphql/query-hooks.ts

  Line 1270 in 28b8e9a

  export function useDataCubesQuery(options: Omit<Urql.UseQueryArgs<DataCubesQueryVariables>, 'query'> = {}) {

NB: The same might happen in other places / on other pages as well.