refactor: Convert protected methods to private (#2358)

src/card-controller/hass/hass-manager.ts

@@ -5,9 +5,9 @@ import { CardHASSAPI } from '../types';
 import { StateWatcher, StateWatcherSubscriptionInterface } from './state-watcher';
 
 export class HASSManager {
-  protected _hass: HomeAssistant | null = null;
-  protected _api: CardHASSAPI;
-  protected _stateWatcher: StateWatcher = new StateWatcher();
+  private _hass: HomeAssistant | null = null;
+  private _api: CardHASSAPI;
+  private _stateWatcher: StateWatcher = new StateWatcher();
 
   constructor(api: CardHASSAPI) {
     this._api = api;

src/card-controller/hass/state-watcher.ts

@@ -9,7 +9,7 @@ export interface StateWatcherSubscriptionInterface {
 }
 
 export class StateWatcher implements StateWatcherSubscriptionInterface {
-  protected _watcherCallbacks = new Map<StateWatcherCallback, string[]>();
+  private _watcherCallbacks = new Map<StateWatcherCallback, string[]>();
 
   public setHASS(oldHass: HomeAssistant | null, hass: HomeAssistant): void {
     if (!oldHass) {