Issue with text format configuration after uninstall

Tested against Drupal 11.x and can confirm this is a bug. On text configuration pages, such as /admin/config/content/formats/manage/full_html, there's a JavaScript error that breaks the CKEditor toolbar, as per above.

TypeError: undefined is not an object (evaluating '[...dividers, ...available].find((button) => {
  return button.name === name;
}).id')

On a node edit page that has the text format enabled that has the CKEditor Responsive Table button added, this JavaScript errors appears.

[Warning] toolbarview-item-unavailable (2) (ckeditor5-dll.js, line 5)
Object

item: "customTable"

Object Prototype
"
Read more: https://ckeditor.com/docs/ckeditor5/latest/support/error-codes.html#error-toolbarview-item-unavailable"

I wrote a fix to address the issue. Please review when you have a chance @gkaas!

@bronzehedwick I moved the function to the .install file since that's where it should go and I made some changes because it wasn't working well for me:
1- if ($key !== FALSE) to cover the cases where the button is found in the first position.
2- saved the array_values($toolbar_items) instead of the array as it was because it wasn't removing it for me otherwise.

Can you test it and see if it works well for you?

Thanks @javi-er! I tested the updated code, but ran into the following JS console error when loading the editor page.

Uncaught TypeError: can't access property "id", [].find(...) is undefined

Here are the steps I took.

1. Updated CKEditor Responsive Table code
2. Enable the module: drush en ckeditor_responsive_table -y
3. Enable the button on the Basic HTML text filter
4. Confirm the button works on a node edit page
5. Confirm the "customTable" entry exists in editor.editor.basic_html config table
6. Disable the module: drush pm-uninstall ckeditor_responsive_table -y
7. Observe the "customTable" entry still exists in editor.editor.basic_html config table
8. Visit /admin/config/content/formats/manage/basic_html
9. Observe the above JS error