app/actions: fix duplicate type name

This fixes a duplicate type name shared by didInstallPrompt and
didInstall actions.

src/app/actions.ts

@@ -21,7 +21,7 @@ export enum AppActionType {
     /* Indicates that the user responded to the install prompt. */
     DidInstallPrompt = 'app.action.didInstallPrompt',
     /* Indicates that the app was installed. */
-    DidInstall = 'app.action.didInstallPrompt',
+    DidInstall = 'app.action.didInstall',
     /** The app has just ben started. */
     DidStart = 'app.action.didStart',
 }

src/app/sagas.test.ts

@@ -7,6 +7,7 @@ import {
     checkForUpdate,
     didBeforeInstallPrompt,
     didCheckForUpdate,
+    didInstall,
     didInstallPrompt,
     installPrompt,
     reload,
@@ -19,7 +20,7 @@ test('monitorAppInstalled', async () => {
     window.dispatchEvent(new Event('appinstalled'));
 
     const action = await saga.take();
-    expect(action).toStrictEqual(didInstallPrompt());
+    expect(action).toStrictEqual(didInstall());
 
     await saga.end();
 });