MM-58066-Use Client Config to determine AppsEnabled (#27872)

* remove enabling apps plugin by default

* use client config to determine creating app bindings.

* update the way dispatch is made

* updated type setting

* fixed unit test

* prevent a nil check

* dispatch batch

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Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/platform/types/src/config.ts

@@ -11,6 +11,7 @@ export type ClientConfig = {
     AndroidLatestVersion: string;
     AndroidMinVersion: string;
     AppDownloadLink: string;
+    AppsPluginEnabled: string;
     AsymmetricSigningPublicKey: string;
     AvailableLocales: string;
     BannerColor: string;