refactor(classifier): use VisX's built-in wheel zoom

[eatyourgreens]

A small refactor of VisXZoom to use zoom.handleWheel, from @visx/zoom, for wheel events. Wheel zoom speed is configured with the wheelDelta prop.

Please request review from @zooniverse/frontend team or an individual member of that team.

Package

• lib-classifier

How to Review

https://localhost:8080/?env=staging&project=markb-panoptes/test-project-1-mb-fem-lab&workflow=3847

Wheel zoom shouldn't have changed. Scrolling up zooms out, scrolling down zooms in. The zoom speed is set by the wheelDelta function. I've left wheel event throttling in, but it might not be needed with the @visx/zoom wheel handler.

http://localhost:6006/?path=/story/subject-viewers-scatterplotviewer--selected-x-ranges

Light curves should still zoom in the x-axis without zooming in y.

Checklist

PR Creator - Please cater the checklist to fit the review needed for your code changes.
PR Reviewer - Use the checklist during your review. Each point should be checkmarked or discussed before PR approval.

General

• Tests are passing locally and on Github
• Documentation is up to date and changelog has been updated if appropriate
• You can yarn panic && yarn bootstrap or docker-compose up --build and FEM works as expected
• FEM works in all major desktop browsers: Firefox, Chrome, Edge, Safari (Use Browserstack account as needed)
• FEM works in a mobile browser

General UX

Example Staging Project: i-fancy-cats

• All pages of a FEM project load: Home Page, Classify Page, and About Pages
• Can submit a classification
• Can sign-in and sign-out
• The component is accessible
  • Can be used with a screen reader BBC guide to VoiceOver
  • Can be used from the keyboard WebAIM guide to keyboard testing
  • It is passing accessibility checks in the storybook

Refactoring

• The PR creator has described the reason for refactoring
• The refactored component(s) continue to work as expected

[coveralls]

coverage: 84.825% (+9.3%) from 75.49%
when pulling 7caaaf0 on eatyourgreens:refactor-visx-wheel-zoom
into aed398d on zooniverse:master.