[OJS3.3.0-13] Announcement Feed Plugin: Add plugin specific title

Describe the problem you would like to solve
The block template of the plugin shows the title text of the announcements:

[12:]    <h2 class="title">{translate key="announcement.announcements"}</h2>

If someone uses the Announcements Block Plugin (https://github.com/RBoelter/announcementsBlock) the title text is displayed twice (s. screenshot below).

Describe the solution you’d like
Please define a plugin specific title for this plugin, so it could be easily changed with the Custom Locale Plugin (https://github.com/pkp/customLocale/) to another title text, e.g. like “Announcements Feeds”.

Who is asking for this feature?
Journal Editors, Journal Administrators, Technical Support

Additional information
Screenshot to problem:
Bildschirmfoto 2022-10-13 um 11.08.01