[FIX] website: perf - don't force homepage on website in data

Let the homepage being set in bootstraping

Without this, any -i will set generic homepage as website homepage_id.
This is not really an issue for enduser as they probably don't do -i once
website is already installed.

But this code was useless anyway, as the homepage_id set in XML would be
overriden during bootstraping of the homepage in website create() override.

Note that this is important to have the correct homepage_id in DB, otherwise
it has to prefetch the generic homepage.

Related to #47257
task-2211013

X-original-commit: 385203d7632daeaab762c57319cc93b8312cc043

addons/website/data/website_data.xml

@@ -278,7 +278,7 @@
             <field name="domain"></field>
             <field name="company_id" ref="base.main_company"/>
             <field name="user_id" ref="base.public_user"/>
-            <field name="homepage_id" ref="homepage_page"/>
+            <!-- Correct homepage will be set during bootstraping --> 
         </record>
 
         <!-- Open website on install -->