fix(cuesheet): reduce image reload flicker when scrolling

Cuesheet rows are virtualized (react-virtuoso), so rows scrolling out
of the small overscan buffer get unmounted, destroying their <img>
elements; scrolling back remounts them from scratch. Native
loading='lazy' on the image compounded this with an extra deferred
load on every remount. Widen the overscan buffer and drop the
redundant lazy attribute so images stay mounted through normal
scroll-and-back gestures.

apps/client/src/views/cuesheet/cuesheet-table/CuesheetTable.tsx

@@ -260,7 +260,7 @@ export default function CuesheetTable({
         context={virtuosoContext}
         style={tableRoot === 'editor' ? { paddingLeft: '1rem' } : undefined}
         computeItemKey={computeItemKey}
-        increaseViewportBy={{ top: 100, bottom: 200 }}
+        increaseViewportBy={{ top: 300, bottom: 600 }}
         components={virtuosoComponents}
         fixedHeaderContent={fixedHeaderContent}
       />

apps/client/src/views/cuesheet/cuesheet-table/cuesheet-table-elements/EditableImage.tsx

@@ -62,7 +62,7 @@ function EditableImage({ initialValue, readOnly, updateValue }: EditableImagePro
           </Button>
         </div>
       )}
-      {Boolean(initialValue) && <img loading='lazy' src={initialValue} className={style.image} />}
+      {Boolean(initialValue) && <img src={initialValue} className={style.image} />}
     </div>
   );
 }