Refactor PopupRefer integration and simplify conditional rendering in Viewer

- Updated import from PopupMenu to PopupRefer in popupRefer component.
- Removed unused action imports in popupRefer component.
- Simplified conditional rendering for PopupRefer in Viewer component by removing format check for currentBook.

src/components/popups/popupRefer/index.tsx

@@ -1,13 +1,7 @@
-import {
-  handleSelection,
-  handleOpenMenu,
-  handleMenuMode,
-  handleNoteKey,
-  handleRenderNoteFunc,
-} from "../../../store/actions";
+import { handleSelection } from "../../../store/actions";
 import { connect } from "react-redux";
 import { stateType } from "../../../store";
-import PopupMenu from "./component";
+import PopupRefer from "./component";
 import { withTranslation } from "react-i18next";
 
 const mapStateToProps = (state: stateType) => {
@@ -24,4 +18,4 @@ const actionCreator = {
 export default connect(
   mapStateToProps,
   actionCreator
-)(withTranslation()(PopupMenu as any) as any);
+)(withTranslation()(PopupRefer as any) as any);

src/containers/viewer/component.tsx

@@ -494,7 +494,7 @@ class Viewer extends React.Component<ViewerProps, ViewerState> {
             }}
           />
         ) : null}
-        {this.props.htmlBook && this.props.currentBook.format !== "PDF" ? (
+        {this.props.htmlBook ? (
           <PopupRefer
             {...{
               rendition: this.props.htmlBook.rendition,