Feat: Add Recently Used Section

[badasswp]

This PR resolves this issue.

Description of the Change

We need to add a new tabbed section called Recently Used that ideally appears as the first tab once someone has previously utilised ISC to add a special character into their post. This section should show the last 80 unique special characters (5 rows of 16 characters in our display).

This PR implements this correctly.

Closes #229

How to test the Change

• Pull PR to local.
• Build plugin correctly like so: composer install && npm start.
• Create a new post and type in some text.
• Click on the Special characters icon located in the toolbar and select a character.
• Proceed to another Special character and you should now see the Recently Used section with the recent character you just used like so:

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Screen.Recording.2025-03-07.at.06.mp4

Changelog Entry

Added - New feature

Credits

@badasswp

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added Critical Flows, Test Cases, and/or End-to-End Tests to cover my change.
• All new and existing tests pass.

[badasswp]

@jeffpaul @Sidsector9 FYI Cypress E2E tests appear to be flaky. They pass for me on my local.

[jeffpaul]

@Sidsector9 bumping this back onto your radar

[Sidsector9]

@badasswp this feature already exists. You'll have to enable it at /wp-admin/options-writing.php under Insert Special Characters > Most used characters palette.

Currently, it stores 5 most used characters in the descending order.

I'm closing as not needed, feel free to reopen if you have any suggestions.

[badasswp]

@Sidsector9 Thanks. I didn't know this existed. No worries. cc. @jeffpaul

[jeffpaul]

@Sidsector9 perhaps at this point we enable that by default?