HFI Calculator: Show only forecasted dailies

**As a** *HFI User* **I want** *to generate HFI calc results based on forecasts only* **So That** *I don't have to race to download a PDF before actuals come in*

TODO: should this be a toggle or just the default data?

**Additional Context**
- Feedback from DK and SI in NWFC
- WF1 API supports this with query param `query=recordType.id=="FORECAST"`

**Acceptance Criteria**
- [ ] Given (Context), When (action carried out), Then (expected outcome)
- [ ] Given (Context), When (action carried out), Then (expected outcome)

**Definition of Done**
- Ready to Demo in Sprint Review
- Does what I have made have appropriate test coverage?
- Documentation and/or scientific documentation exists and can be found
- Peer Reviewed by 2 people on the team
- Manual testing of all PRs in Dev and Prod
- Merged

Start at the HFI calculator entry point and trace its requests to the WF1 API, where the issue identifies the FORECAST recordType query parameter. Clarify whether forecast-only results should be a toggle or the default, then define concrete acceptance criteria and add appropriate test coverage before demonstrating the result.

Written by the indexing model from the issue text.