i18n(home): localize the remaining preinstalled catalog rows

[ReichiMD]

What

Same approach as #632, applied to the preinstalled catalog rows on the home screen.

The home screen already localizes preinstalled catalog rows in
localizedCategoryTitle(), keyed by CatalogConfig.id. Seven of the twelve
preinstalled catalogs were never added to that map, so their row headers stayed
English in every language.

• 7 rows now resolve through stringResource(...): Favorite TV, Sports,
  Popular Live Sports, Just Added, Top Movies This Week, New in K-Dramas and
  Coming Soon
• 1 of them reuses an existing resource (settings_coming_soon) instead of
  adding a duplicate key
• 6 new keys added to values/strings.xml, in the existing Home section
• German values added to values-de/strings.xml

It also adds the German values for the six live TV group PIN strings that came
in recently and had no values-de entries yet (live_menu_lock_category,
live_menu_unlock_category, live_group_enter_pin, live_group_pin_incorrect,
live_group_pin_required_title, live_group_pin_required_message). With those,
values-de covers every key in values except app_name.

Why

Approved in Discord (28 Aug): "Yes try to also bring hardcoded things into this.
That has been kinda a long time bug. They dont have to be in English yea."

This benefits all 50 language folders, not just German — untranslated locales
fall back to English exactly as before.

Notes

• Stored values and internal keys are unchanged. The lookup is by
  CatalogConfig.id, never by the displayed text, so cloud sync, ordering and
  the renamed-catalog detection in CatalogRepository keep comparing the same
  English defaults they always did. Follows the existing pattern from
  LiveCategory.kt.
• Nothing is resolved outside a composable, so no ViewModel picks up the
  system locale instead of the in-app one.
• Brand and franchise names (Netflix, Marvel, James Bond, ...) are left untouched.
• Log messages, telemetry strings and animation labels are out of scope.
• Verified with testSideloadDebugUnitTest on the branch; the build is green.

created by Claude (Anthropic) on behalf of @ReichiMD