[idumlupinar]

Fixes #7255

Summary

When a portal is created, PortalTemplateImporter.ParseTab already sets UserTabId and SearchTabId from the template's language-neutral <tabtype>usertab</tabtype> / <tabtype>searchtab</tabtype> markers and saves them via UpdatePortalSetup. Right afterwards, PortalController.CreatePortal unconditionally overwrote both values with TabController.GetTabByTabPath(..., "//UserProfile" / "//ActivityFeed" / "//SearchResults"). Tab paths are built from tab names, so for a localized template (e.g. French, where the pages are named "Page profil utilisateur" / "Page de résultats de recherche") the lookup returns -1 and clears the correct values. The new site's User Profile Page and Search Results Page then show as empty in Site Settings.

This PR keeps the values set by the template and only falls back to the tab-path lookup when the template did not provide them (-1). English templates resolve to the same Activity Feed / Search Results pages as before, and templates without tabtype markers keep the old behaviour.

Release Note

New sites created from a localized (non-English) site template now get their User Profile and Search Results pages set automatically.

Testing Steps

1. In Portals\_default, copy Default Website.template, Default Website.template.resources and Default Website.template.en-US.resx to Repro Website.*. In the .resx, change Tab.ActivityFeed.Name.Text and Tab.SearchResults.Name.Text to non-English names (e.g. Flux activite, Resultats de recherche). Alternatively, install a French language pack and create a French site.
2. Persona Bar → Sites → Add New Site, using the "Repro Website" template.
3. Open the new site's Site Settings → Site Behavior → Default Pages.
   • Before: User Profile Page and Search Results Page are empty.
   • After: they point to the renamed pages.
4. Regression check: create a site from the standard Default Website template. The pages are still Activity Feed and Search Results.

Verified on clean installs of develop (before) and this branch (after):

Template	Before	After
Renamed (localized) pages	UserTabId -1, SearchTabId -1	Flux activite / Resultats de recherche
Default Website	Activity Feed / Search Results	Activity Feed / Search Results

No unit tests were added: CreatePortal has no existing test coverage and depends on static TabController lookups and the template importer.