Auto merge of #16658 - n0max:remove-index-size-error, r=emilio

Remove IndexSizeError in CanvasRenderingContext2D::drawImage

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The current spec don't expect the IndexSizeError if the rectangle is empty.

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #10600 (github issue number if applicable).

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- [X] There are tests for these changes

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components/script/dom/canvasrenderingcontext2d.rs

@@ -350,7 +350,7 @@ impl CanvasRenderingContext2D {
                                                                      dh);
 
         if !is_rect_valid(source_rect) || !is_rect_valid(dest_rect) {
-            return Err(Error::IndexSize);
+            return Ok(());
         }
 
         let smoothing_enabled = self.state.borrow().image_smoothing_enabled;
@@ -407,7 +407,7 @@ impl CanvasRenderingContext2D {
                                                                      dh);
 
         if !is_rect_valid(source_rect) || !is_rect_valid(dest_rect) {
-            return Err(Error::IndexSize);
+            return Ok(());
         }
 
         let smoothing_enabled = self.state.borrow().image_smoothing_enabled;