fix: parse image alt text for image blocks (#1883)

Author: bgreenlee

packages/core/src/blocks/ImageBlockContent/parseImageElement.ts

@@ -1,6 +1,7 @@
 export const parseImageElement = (imageElement: HTMLImageElement) => {
   const url = imageElement.src || undefined;
   const previewWidth = imageElement.width || undefined;
+  const name = imageElement.alt || undefined;
 
-  return { url, previewWidth };
+  return { url, previewWidth, name };
 };

packages/server-util/src/context/__snapshots__/ServerBlockNoteEditor.test.ts.snap

@@ -217,7 +217,7 @@ exports[`Test ServerBlockNoteEditor > converts to and from markdown (blocksToMar
     "props": {
       "backgroundColor": "default",
       "caption": "",
-      "name": "",
+      "name": "Example",
       "showPreview": true,
       "textAlignment": "left",
       "url": "exampleURL",