[share] offered 'internal link' for files and folders in encrypted libraries (#4621)

* offered 'share' for encrypted library in 'dir view' page

frontend/src/components/toolbar/multiple-dir-operation-toolbar.js

@@ -398,7 +398,7 @@ class MultipleDirOperationToolbar extends React.Component {
                   itemPath={direntPath}
                   userPerm={dirent.permission}
                   repoID={repoID}
-                  repoEncrypted={false}
+                  repoEncrypted={this.props.repoEncrypted}
                   enableDirPrivateShare={this.props.enableDirPrivateShare}
                   isGroupOwnedRepo={this.props.isGroupOwnedRepo}
                   toggleDialog={this.toggleCancel}