chore: remove the use of IntValueRange

[zepfred]

Description of the change

Companion for TimefoldAI/timefold-solver#1900

Checklist

Development

• The changes have been covered with tests, if necessary.
• You have a green build, with the exception of the flaky tests.
• UI and JS files are fully tested, the user interface works for all modules affected by your changes (e.g., solve and analyze buttons).
• The network calls work for all modules affected by your changes (e.g., solving a problem).
• The console messages are validated for all modules affected by your changes.

Code Review

• This pull request includes an explanatory title and description.
• The GitHub issue is linked.
• At least one other engineer has approved the changes.
• After PR is merged, inform the reporter.

[triceo]

CI is failing.

[zepfred]

CI is failing.

I haven't pushed the solver changes yet and will convert it to draft.

[triceo]

Verified working with latest main.