[MM-64425] Add configurable account deletion link (#31396)

* [MM-64425] Add configurable account deletion link

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

e2e-tests/playwright/lib/src/server/default_config.ts

@@ -202,6 +202,7 @@ const defaultServerConfig: AdminConfig = {
         ScheduledPosts: true,
         EnableWebHubChannelIteration: false,
         FrameAncestors: '',
+        DeleteAccountLink: '',
     },
     TeamSettings: {
         SiteName: 'Mattermost',