Key changes:
* The `pdfiumandroid` directory, which contained the local library source, has been completely removed.
* The `settings.gradle.kts` file is updated to remove the `:pdfiumandroid` and `:pdfiumandroid:arrow` includes.
* The main `app/build.gradle.kts` is modified to depend on the published `io.legere:pdfiumandroid:1.0.35` artifact from a remote repository instead of the local project module.
* Code in `PdfPageComposable.kt` that depended on `PdfPageObjectType` and logic for handling image objects in dark mode has been removed, simplifying the rendering process.
