Ensure dimension changes invalidate view

[tomhicks]

The track.dimensions object remains the same throughout the lifespan of the track, but its values are updated. This means that the setter always receives the same object and therefore doesn't result in the state actually changing.

By copying the dimension values into a new object, we ensure that consumers of this hook are always kept up to date with the new dimensions.

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Pull Request Details

JIRA link(s):

• AHOYAPPS-0000

Description

A description of what this PR does.

Burndown

Before review

• Updated CHANGELOG.md if necessary
• Added unit tests if necessary
• Updated affected documentation
• Verified locally with npm test
• Manually sanity tested running locally
• Included screenshot as PR comment (if needed)
• Ready for review

Before merge

• Got one or more +1s
• Re-tested if necessary

[timmydoza]

Thanks @tomhicks! What a great catch!

For security reasons, our CI pipeline won't run on pull requests from outside contributors. So I've pulled your changes down, added a test case, and pushed up a new branch that I created a PR for. This way our CI test will run, and you will still be listed as a contributor.

PR here: #387