Don't ping persistent storage for every initialize

Author: kimadeline

src/client/pythonEnvironments/base/envsCache.ts

@@ -51,13 +51,20 @@ export interface IEnvsCache {
 export type CompleteEnvInfoFunction = (envInfo: PythonEnvInfo) => boolean;
 
 export class PythonEnvInfoCache implements IEnvsCache {
+    private initialized = false;
+
     private envsList: PythonEnvInfo[] | undefined;
 
     private persistentStorage: IPersistentState<PythonEnvInfo[]> | undefined;
 
     constructor(private readonly isComplete: CompleteEnvInfoFunction) {}
 
     public initialize(): void {
+        if (this.initialized) {
+            return;
+        }
+
+        this.initialized = true;
         this.persistentStorage = createGlobalPersistentStore<PythonEnvInfo[]>('PYTHON_ENV_INFO_CACHE');
         this.envsList = this.persistentStorage?.value;
     }