Reduce axes width to better use space

[wojtekn]

Related to https://github.com/Automattic/dotcom-forge/issues/9966

Proposed Changes

I propose slightly reducing the width of the left and right axes to optimize the space used for the chart.

Why are these changes being made?

There is too much padding on the left side of the chart and we would like to better ruse that space.

The PR reduces both axes width by 10px so it gives more room for the chart itself.

It's still not ideal on the left side for low numbers. It's caused by how the chart library is implemented internally - it uses a fixed width for the axis and then aligns the text to the axis itself.

It looks for short labels as follows now:

Desktop	Mobile

Desktop	Mobile

Testing Instructions

1. Open Calypso locally or use a Calypso Live link
2. Navigate to the /sites page
3. Locate a Business site with enabled Hosting features
4. Open the site's card and click the Monitoring tab
5. Confirm that the Server Performance chart has better y-axis labels spacing

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
  • For UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-126172

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-126172&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-126172&env=a8c-for-agencies

[matticbot]

This PR does not affect the size of JS and CSS bundles shipped to the user's browser.

Generated by performance advisor bot at iscalypsofastyet.com.

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• notifications
• wpcom-block-editor

To test WordPress.com changes, run install-plugin.sh $pluginSlug update/monitoring-line-chart-padding on your sandbox.

[ivan-ottinger]

The changes look good and I did not observe any issues / regressions. 👌🏼🙂

It's still not ideal on the left side for low numbers. It's caused by how the chart library is implemented internally - it uses a fixed width for the axis and then aligns the text to the axis itself.

I run into this case as well when testing, but still think the change is worth it as it adds more space to the chart.