Fix remaining 17 UI test failures: group defaults, identifiers, hittability, date format

- resetAppState: use correct suite name to clear group defaults (fixes stale subscription state)
- Reorder configureIfNeeded: set expireTrial before IAPManager init
- Add browse_themes_button identifier to CustomizeView Browse Themes button
- Add mood_button_* identifiers to Entry Detail mood grid in NoteEditorView
- Use coordinate-based tap throughout all test screens (iOS 26 Liquid Glass hittability)
- Fix HeaderMoodLogging date format: M/d/yyyy → yyyy/MM/dd to match entry_row identifiers
- AppLaunchTests: wait for isSelected state with NSPredicate instead of immediate check
- OnboardingTests: add waits between swipes and retry logic for skip button

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Tests iOS/Screens/EntryDetailScreen.swift

@@ -26,20 +26,26 @@ struct EntryDetailScreen {
     // MARK: - Actions
 
     func dismiss() {
-        doneButton.tapWhenReady()
+        let button = doneButton
+        _ = button.waitForExistence(timeout: 5)
+        button.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
     }
 
     func selectMood(_ mood: MoodChoice) {
         let button = moodButton(for: mood)
-        button.tapWhenReady()
+        _ = button.waitForExistence(timeout: 5)
+        button.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
     }
 
     func deleteEntry() {
-        deleteButton.tapWhenReady()
+        let button = deleteButton
+        _ = button.waitForExistence(timeout: 5)
+        button.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
         // Confirm the delete alert
         let deleteAlert = app.alerts["Delete Entry"]
         let confirmButton = deleteAlert.buttons["Delete"]
-        confirmButton.tapWhenReady()
+        _ = confirmButton.waitForExistence(timeout: 5)
+        confirmButton.coordinate(withNormalizedOffset: CGVector(dx: 0.5, dy: 0.5)).tap()
     }
 
     // MARK: - Assertions