fix: installed vendor profiles only update when OTA is enabled (#15831)

* preset updater: refresh installed vendors from resources regardless of enable_ota

Since c4fea8ad24 the resources check in check_installed_vendor_profiles()
sat behind enabled_config_update, which now follows enable_ota, a hidden
flag that defaults to off. The hotfix a93c6ea67b then made that gate skip
installed vendors entirely, so a new build's newer vendor profiles were
never installed over an existing vendor unless OTA had been turned on.
Before the gating the update URL always had a default, so the comparison
effectively always ran.

The resources shipped with a build are not an over-the-air update. Judge
installed vendors against them, and drop the ones no longer enabled,
regardless of the flag; enable_ota keeps gating the online sync.

* preset updater: stop reinstalling the filament library on every launch

check_installed_vendor_profiles() put OrcaFilamentLibrary on the install
list unconditionally, so every launch recopied the whole vendor from
resources and, in a build that ships the profile JSONs rather than a
preset cache, then re-parsed and re-cached it: about 0.3 s of a dev
build's startup, and a 3 MB copy in a release build, for a vendor that
had not changed.

The library was special-cased because it is never in the enabled-vendor
list. Treat it like the default bundle instead: always wanted, and
reinstalled only when the resources carry a newer version.

src/slic3r/Utils/PresetUpdater.cpp

@@ -1098,17 +1098,15 @@ void PresetUpdater::priv::check_installed_vendor_profiles() const
     const auto enabled_vendors = app_config->vendors();
 
     std::set<std::string> bundles;
-    // Orca: always install filament library
-    bundles.insert(PresetBundle::ORCA_FILAMENT_LIBRARY);
     // A vendor is named by its profile or, where the build ships preset caches
     // instead of the raw profile JSONs, by its cache alone.
     for (const std::string &vendor_name : vendor_names_in(rsrc_path)) {
-        if (bundles.find(vendor_name) != bundles.end())continue;
+        // enabled_vendors lists the vendors whose printer models the user picked, and
-
+        // neither of these two is ever in it.
-        const auto is_vendor_enabled = (vendor_name == PresetBundle::ORCA_DEFAULT_BUNDLE) // always update configs from resource to vendor for ORCA_DEFAULT_BUNDLE
+        const auto is_vendor_enabled = (vendor_name == PresetBundle::ORCA_DEFAULT_BUNDLE)
+                                       || (vendor_name == PresetBundle::ORCA_FILAMENT_LIBRARY)
                                        || (enabled_vendors.find(vendor_name) != enabled_vendors.end());
         if (is_vendor_installed(vendor_name)) {
-            if (enabled_config_update) {
             if (is_vendor_enabled) {
                 // Orca: whichever form of the vendor resources ships at the newer
                 // version is the one installing lays down, and the one to judge
@@ -1127,7 +1125,6 @@ void PresetUpdater::priv::check_installed_vendor_profiles() const
                 // need to be removed because not installed
                 remove_installed_vendor(vendor_name);
             }
-            }
         } else if (is_vendor_enabled) {
             bundles.insert(vendor_name);
         }