[BHP1-1474] Add new Slope Outputs in Slope Tool

[Kcheung42]

Purpose

1. Ensure there is now two slope outputs, one for degrees and one for percent.
2. Ensure updating units system does not change these units

Make sure to also review PR on behave-mirror firelab/behave#58

Related Issues

Closes BHP1-1474

Submission Checklist

• Included Jira issue in the PR title (e.g. BHP1-### <title>)
• Code passes linter rules (clj-kondo --lint components/**/src bases/**/src projects/**/src)
• Feature(s) work when compiled (clojure -M:compile-cljs)

Testing

1. Open local VMS and run migration migrations.2025-12-15-update-slope-tool
2. Open local App and sync
3. Open "Slope From Map Measurement Tool"
4. Ensure there are now 2 slope outputs, one for "%" hand one for "deg"
5. Change "Units System" and ensure slope units do not change
6. Add these values and compute:

• Contour interval: 10 ft
• Map Distance: 2
• Number of Contour Intervals: 3
• Map Representative Fraction: 4000

Results:

Slope: 5 %
Slope: 3 deg

Screenshots

[rjsheperd]

LGTM 👍