revert(route-viewer): never hide mode selector

Author: miles-grant-ibigroup

lib/components/viewers/route-viewer.js

@@ -129,29 +129,26 @@ class RouteViewer extends Component {
                   </option>
                 ))}
               </select>
-              {/* Do not show a mode selector that can't change anything */}
-              {modes.length > 2 && (
-                <select
-                  aria-label='Mode Filter'
-                  id='mode'
-                  onBlur={this.onFilterChange}
-                  onChange={this.onFilterChange}
-                  value={filter.mode || ''}
-                >
-                  <option value={''}>
+              <select
+                aria-label='Mode Filter'
+                id='mode'
+                onBlur={this.onFilterChange}
+                onChange={this.onFilterChange}
+                value={filter.mode || ''}
+              >
+                <option value={''}>
+                  {intl.formatMessage({
+                    id: 'components.RouteViewer.allModes'
+                  })}
+                </option>
+                {modes.map((mode) => (
+                  <option key={mode} value={mode.toUpperCase()}>
                     {intl.formatMessage({
-                      id: 'components.RouteViewer.allModes'
+                      id: `common.otpTransitModes.${mode.toLowerCase()}`
                     })}
                   </option>
-                  {modes.map((mode) => (
-                    <option key={mode} value={mode.toUpperCase()}>
-                      {intl.formatMessage({
-                        id: `common.otpTransitModes.${mode.toLowerCase()}`
-                      })}
-                    </option>
-                  ))}
-                </select>
-              )}
+                ))}
+              </select>
             </span>
             <span className='routeSearch'>
               <Icon type='search' />