Jonas Jenwald 7bca3c81a9 Fix CSS-only zooming in the viewer (PR 15812 follow-up)
Currently if you e.g. enable the `useOnlyCssZoom` option rendering may no longer finish as intended. To reproduce:
 - Enable the `useOnlyCssZoom` option.
 - Load https://github.com/mozilla/pdf.js/files/1522715/wuppertal_2012.pdf (in the development viewer).
 - When rendering starts, *immediately* change the zoom-level.

In this case the document will never finish rendering, since the `postponeDrawing`-functionality will (here incorrectly) abort rendering and with CSS-only zooming rendering is only expected to happen once per page.
To fix this we'll simply ignore any `drawingDelay` when CSS-only zooming is used (regardless if it's triggered via the option or the zoom-level being very large).
2023-03-29 10:36:48 +02:00
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