[MM-53102] Add support for multi-word highlights without notifications in web (#24050)

- Adds a new section under settings/notifications for adding custom multi-word keywords that get highlighted without notification
- Adds a new classname for highlighting words although the styling is the same as mentions highlights
- Added a few components to the ReduxFromProps pattern
- Adds supported type for the hook of PluginComponent type
- Add upsell for highlight without notification
- Moved 'setting_item.tsx' to the components folder
- Improved prop names and function structure for setting_item, setting_item_max and setting_item_min
- Moved 'toggle_modal_button.tsx' to the components folder
- Removed t and utility messages from a few components
- Fixed bug where the tooltip was not getting rendered on restrictedButtons
- Improved the mobile view of the settings modal
- Adds E2E for the feature

webapp/channels/src/plugins/test/__snapshots__/post_type.test.tsx.snap

@@ -134,7 +134,6 @@ exports[`plugins/PostMessageView should match snapshot with no extended post typ
           "onImageLoaded": [Function],
         }
       }
-      mentionKeys={Array []}
       message="this is some text"
       options={Object {}}
       post={