PDFPageInterpreter fails to process resources when resources dict is empty

PDFPageInterpreter fails to process resources when resources dict is empty: a task in harbor-swesmith-rl-artifacts: Harbor SWE-Smith 强化学习数据产物 (Harbor dataset). When processing PDF pages with empty resource dictionaries, the PDFPageInterpreter crashes with an IndexError. This happens because the…

The task

When processing PDF pages with empty resource dictionaries, the PDFPageInterpreter crashes with an IndexError. This happens because the resource processing logic was removed but the code still tries to access resource elements.

Part of keryszhan/harbor-swesmith-rl-artifacts.