Align with migration of Structures datasets to subfolder

[IsakNaslundBh]

NOTE: Depends on

BHoM/BHoM_Datasets#122

Issues addressed by this PR

Aligns hardcoded paths to datasets migrated to discipline superfolder.

Test files

Changelog

Additional comments

[FraserGreenroyd]

Code changes reviewed only, looks aligned per discussion with @IsakNaslundBh

[bhombot-ci]

@IsakNaslundBh just to let you know, I have provided a check-installer result to this Pull Request as it was detected to be linked to other Pull Requests in a series. The comment which triggered this check came from @peterjamesnugent on BHoM_Datasets

[bhombot-ci]

@IsakNaslundBh just to let you know, I have provided a check-versioning result to this Pull Request as it was detected to be linked to other Pull Requests in a series. The comment which triggered this check came from @IsakNaslundBh on BHoM_Engine

[IsakNaslundBh]

@BHoMBot check copyright-compliance
@BHoMBot check dataset-compliance
@BHoMBot check core
@BHoMBot check documentation-compliance
@BHoMBot check null-handling
@BHoMBot check project-compliance
@BHoMBot check serialisation

[bhombot-ci]

@IsakNaslundBh to confirm, the following actions are now queued:

• check copyright-compliance
• check dataset-compliance
• check core
• check documentation-compliance
• check null-handling
• check project-compliance
• check serialisation

There are 13 requests in the queue ahead of you.

[bhombot-ci]

@IsakNaslundBh just to let you know, I have provided a check-ready-to-merge result to this Pull Request as it was detected to be linked to other Pull Requests in a series. The comment which triggered this check came from @IsakNaslundBh on BHoM_Datasets