Correctly resize full width images when table of contents is opened/closed (#5826)

* stash

* restore

* Self review

app/scenes/Document/components/Contents.tsx

@@ -10,7 +10,9 @@ import useWindowScrollPosition from "~/hooks/useWindowScrollPosition";
 const HEADING_OFFSET = 20;
 
 type Props = {
+  /** Whether the document is rendering full width or not. */
   isFullWidth: boolean;
+  /** The headings to render in the contents. */
   headings: {
     title: string;
     level: number;
@@ -45,7 +47,7 @@ export default function Contents({ headings, isFullWidth }: Props) {
 
   // calculate the minimum heading level and adjust all the headings to make
   // that the top-most. This prevents the contents from being weirdly indented
-  // if all of the headings in the document are level 3, for example.
+  // if all of the headings in the document start at level 3, for example.
   const minHeading = headings.reduce(
     (memo, heading) => (heading.level < memo ? heading.level : memo),
     Infinity