Deprecation: #70477 - Deprecate SpriteIcon classes

See forge#70477

Description

The following classes have been marked as deprecated.

\TYPO3\CMS\Backend\Sprite\AbstractSpriteHandler
\TYPO3\CMS\Backend\Sprite\SimpleSpriteHandler
\TYPO3\CMS\Backend\Sprite\SpriteBuildingHandler
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Impact

Any usage of these classes will trigger a deprecation log entry.

Affected Installations

Extensions that use these PHP classes.

Migration

Use the IconRegistry to register icons.