split signOut and clear token into two methods

src/Umbraco.Web.UI.Client/src/apps/app/app.element.ts

@@ -77,8 +77,8 @@ export class UmbAppElement extends UmbLitElement {
 	async #setup() {
 		if (this.serverUrl === undefined) throw new Error('No serverUrl provided');
 
-		/* All requests to the server requires the base URL to be set. 
-		We make sure it happens before we get the server status. 
+		/* All requests to the server requires the base URL to be set.
+		We make sure it happens before we get the server status.
 		TODO: find the right place to set this
 		*/
 		OpenAPI.BASE = this.serverUrl;
@@ -93,7 +93,7 @@ export class UmbAppElement extends UmbLitElement {
 			// If the runtime level is "install" we should clear any cached tokens
 			// else we should try and set the auth status
 			if (this.#serverConnection.getStatus() === RuntimeLevelModel.INSTALL) {
-				await this.#authContext.signOut();
+				await this.#authContext.clearTokenStorage();
 			} else {
 				await this.#setAuthStatus();
 			}

src/Umbraco.Web.UI.Client/src/shared/auth/auth-flow.ts

@@ -223,6 +223,17 @@ export class UmbAuthFlow {
 		return !!this.#accessTokenResponse && this.#accessTokenResponse.isValid();
 	}
 
+	/**
+	 * Forget all cached token state
+	 */
+	async clearTokenStorage() {
+		await this.#storageBackend.removeItem(TOKEN_RESPONSE_NAME);
+
+		// clear the internal state
+		this.#accessTokenResponse = undefined;
+		this.#refreshToken = undefined;
+	}
+
 	/**
 	 * This method will sign the user out of the application.
 	 */

src/Umbraco.Web.UI.Client/src/shared/auth/auth.context.interface.ts

@@ -34,6 +34,11 @@ export interface IUmbAuthContext {
 	 */
 	getLatestToken(): Promise<string>;
 
+	/**
+	 * Clears the token storage.
+	 */
+	clearTokenStorage(): Promise<void>;
+
 	/**
 	 * Signs the user out by removing any tokens from the browser.
 	 */

src/Umbraco.Web.UI.Client/src/shared/auth/auth.context.ts

@@ -65,6 +65,14 @@ export class UmbAuthContext extends UmbBaseController implements IUmbAuthContext
 		return this.#authFlow.performWithFreshTokens();
 	}
 
+	/**
+	 * Clears the token storage.
+	 * @memberof UmbAuthContext
+	 */
+	clearTokenStorage() {
+		return this.#authFlow.clearTokenStorage();
+	}
+
 	/**
 	 * Signs the user out by removing any tokens from the browser.
 	 * @return {*}  {Promise<void>}