Stats: Unify title processing for different Post cards

[a8ck3n]

Proposed Changes

Updates the two Post cards on the Insights page to use the improved processing as introduced on the Post Detail page. Includes a small refactoring to put the shared functions into a separate text-utils/index.tsx file and updates the LatestPostCard and PostCardsGroup components to use them.

Before

After

Why are these changes being made?

The previous logic would cut titles mid-word. The new truncation logic attempts to truncate on whitespace if possible. It also processes HTML tags & entities before truncation so as to avoid truncating mid tag/entity.

Testing Instructions

• Launch the Calypso Live link.
• Visit Stats → Insights.
• Confirm the title is truncated on whitespace.

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-132445

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-132445&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-132445&env=a8c-for-agencies

[matticbot]

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

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

• odyssey-stats

To test WordPress.com changes, run install-plugin.sh $pluginSlug update/stats-shared-title-processing on your sandbox.

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

Async-loaded Components (~132 bytes added 📈 [gzipped])

name                                                 parsed_size           gzip_size
async-load-calypso-my-sites-stats-stats-post-detail       +243 B  (+0.7%)      +47 B  (+0.5%)
async-load-calypso-my-sites-stats-pages-insights          +143 B  (+0.3%)      +85 B  (+0.5%)

React components that are loaded lazily, when a certain part of UI is displayed for the first time.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[dognose24]

Thanks for the refactor. LGTM!