[FIX] Add HomePageHeader to CustomHomePage

[hugocostadev]

Proposed changes (including videos or screenshots)

HomePageHeader to CustomHomePage

Issue(s)

Customize Button not appearing when the homepage is enabled to Use custom homepage content

Steps to test or reproduce

1. As admin log in the rocket.chat
2. Should be displayed a new home page, with the items:
3. Click on the button customize
4. Should be open the Settings/Layout
5. Click on content
6. Enable the Use custom home page option
7. Return to the home page

Further comments