Fix crash al abrir Import Data en Mac Catalyst (@EnvironmentObject no heredado en sheets)

ImportDataView usa @EnvironmentObject (iapService/accountStore/tabSelection).
En Mac (Designed for iPad) las sheets no heredan el environment vía
PresentationHostingController → EnvironmentObject.error() / SIGTRAP al abrir
Import Data (ImportDataView.swift:247, shouldShowAccountSelection). Reinyectados
los 3 objects en las sheets de Settings, Dashboard y Onboarding.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01L2p3gUZRNWW388rWFRjiU7

PortfolioJournal/Views/Settings/SettingsView.swift

@@ -6,6 +6,8 @@ struct SettingsView: View {
     private let iapService: IAPService
     @StateObject private var viewModel: SettingsViewModel
     @EnvironmentObject private var adMobService: AdMobService
+    @EnvironmentObject private var accountStore: AccountStore
+    @EnvironmentObject private var tabSelection: TabSelectionStore
     @AppStorage("showForecast") private var showForecast = true
     @AppStorage("cloudSyncEnabled") private var cloudSyncEnabled = false
     @AppStorage("faceIdEnabled") private var faceIdEnabled = false
@@ -86,7 +88,11 @@ struct SettingsView: View {
                 ActivityView(activityItems: [shareItem.url])
             }
             .sheet(isPresented: $viewModel.showingImportSheet) {
+                // Sheets don't inherit @EnvironmentObject on Mac Catalyst → re-inject.
                 ImportDataView()
+                    .environmentObject(iapService)
+                    .environmentObject(accountStore)
+                    .environmentObject(tabSelection)
             }
             .confirmationDialog(
                 "Reset All Data",