Use inline content disposition for common images and PDFs (#6924)

* Use inline content disposition for common images and PDFs

* Add double-click on widgets to download

shared/editor/nodes/Attachment.tsx

@@ -86,6 +86,9 @@ export default class Attachment extends Node {
         href={node.attrs.href}
         title={node.attrs.title}
         onMouseDown={this.handleSelect(props)}
+        onDoubleClick={() => {
+          this.editor.commands.downloadAttachment();
+        }}
         onClick={(event) => {
           if (isEditable) {
             event.preventDefault();
@@ -159,6 +162,7 @@ export default class Attachment extends Node {
         // create a temporary link node and click it
         const link = document.createElement("a");
         link.href = node.attrs.href;
+        link.target = "_blank";
         document.body.appendChild(link);
         link.click();