fix(canvas): createImageBitmap throws when canvas size is 0 (#170)

Fixes https://sentry.sentry.io/issues/4747137532/?project=11276

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Co-authored-by: Francesco Novy <francesco.novy@sentry.io>

Author: billyvg

packages/rrweb/src/record/observers/canvas/canvas-manager.ts

@@ -347,7 +347,7 @@ export class CanvasManager implements CanvasManagerInterface {
         // The browser throws if the canvas is 0 in size
         // Uncaught (in promise) DOMException: Failed to execute 'createImageBitmap' on 'Window': The source image width is 0.
         // Assuming the same happens with height
-        if (canvas.width === 0 || canvas.height === 0) return;
+        if (!canvas.width || !canvas.height) return;
 
         snapshotInProgressMap.set(id, true);
         if (