Content picker: Allow selections on a content picker on a read-only document to be opened (closes #20816) (#20819)

Allow selections on a content picker on a read-only document to be opened.

Author: AndyButland

src/Umbraco.Web.UI.Client/src/views/propertyeditors/contentpicker/contentpicker.html

@@ -13,7 +13,7 @@
                               description="node.url"
                               sortable="!sortableOptions.disabled"
                               allow-remove="allowRemove"
-                              allow-open="model.config.showOpenButton && allowOpen && !dialogEditor && !readonly"
+                              allow-open="model.config.showOpenButton && allowOpen && !dialogEditor"
                               on-remove="remove($index)"
                               on-open="openEditor(node)">
             </umb-node-preview>