Fix incorrect selection of VPN preset (#996)

Drop "Any" to rather make the preset filter an explicit preset
selection.

Regardless of `filtersWithSelection`, _always_ enforce the preset filter
to:

- The preset of the currently selected entity
- The first among available presets (normally non-empty)

Fixes #995

Library/Sources/AppUIMain/Views/VPN/VPNFiltersView.swift

@@ -93,8 +93,6 @@ private extension VPNFiltersView {
 
     var presetPicker: some View {
         Picker(Strings.Views.Vpn.preset, selection: $model.filters.presetId) {
-            Text(Strings.Global.Nouns.any)
-                .tag(nil as String?)
             ForEach(model.presets, id: \.presetId) {
                 Text($0.description)
                     .tag($0.presetId as String?)

Library/Sources/AppUIMain/Views/VPN/VPNProviderServerView.swift

@@ -132,25 +132,29 @@ private extension VPNProviderServerView {
         return servers
     }
 
-    var initialFilters: VPNFilters? {
-        guard let selectedEntity, filtersWithSelection else {
-            return nil
-        }
+    var initialFilters: VPNFilters {
         var filters = VPNFilters()
+
+        // force initial preset filter
+        filters.presetId = vpnManager.options.presets.first?.presetId
+
+        if let selectedEntity {
+            filters.presetId = selectedEntity.preset.presetId
+            if filtersWithSelection {
                 filters.categoryName = selectedEntity.server.provider.categoryName
 #if os(macOS)
                 filters.countryCode = selectedEntity.server.provider.countryCode
 #endif
+            }
+        }
         return filters
     }
 
     func compatiblePreset(with server: VPNServer) -> VPNPreset<Configuration>? {
         vpnManager
             .presets
-            .filter { preset in
-                filtersViewModel.presets.contains {
-                    preset.presetId == $0.presetId
-                }
+            .filter {
+                $0.presetId == filtersViewModel.filters.presetId
             }
             .first {
                 if let supportedIds = server.provider.supportedPresetIds {