Expose not rounded canvas width

Author: mrtcode

web/pdf_page_view.js

@@ -1118,6 +1118,8 @@ class PDFPageView extends BasePDFPageView {
     const { outputScale } = this;
     this.#hasRestrictedScaling = this.#needsRestrictedScaling;
 
+    this.currentCanvasWidth = width * outputScale.sx;
+
     const sfx = approximateFraction(outputScale.sx);
     const sfy = approximateFraction(outputScale.sy);