Feature: #61993 - _CSS_PAGE_STYLE is now only included on the affected page

See Issue #61993

Description

CSS set via the TypoScript property _CSS_PAGE_STYLE was concatenated and compressed with the non-page-specific CSS and therefore loaded on pages it did not affect at all.

Impact

The behaviour from now on is that _CSS_PAGE_STYLE is included only on the affected page. Depending on your configuration it will be written in an external file and included on the page or directly added as inline CSS block. Compression for page specific CSS also depends on the global config.compressCss setting.