components: FullScreenPicker uses the pinned bar

Completes the picker upstream: FullScreenPicker now passes largeTopBar=false
to CollapsingScaffold, so the family's selection pickers sit under a pinned
single-line bar instead of a tall collapsing header (the short list has nothing
to scroll past). Matches Calendula's scrollable-picker fix; applies family-wide.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

components/src/main/kotlin/de/jeanlucmakiola/floret/components/OptionPicker.kt

@@ -15,9 +15,10 @@ import androidx.compose.ui.window.DialogWindowProvider
 
 /**
  * Full-screen scaffold for selection pickers: a full-bleed [Dialog] that reuses
- * [CollapsingScaffold] (collapsing title + back), so a picker is visually
- * identical to a settings sub-page and uses the full width. [content] places the
- * connected grouped rows; selecting one calls [onDismiss].
+ * [CollapsingScaffold] with a pinned single-line bar, so a picker uses the full
+ * width without a tall header — it's a short selection list, so the large
+ * collapsing header would only be empty space to scroll past. [content] places
+ * the connected grouped rows; selecting one calls [onDismiss].
  */
 @Composable
 fun FullScreenPicker(
@@ -45,6 +46,7 @@ fun FullScreenPicker(
         CollapsingScaffold(
             title = title,
             onBack = onDismiss,
+            largeTopBar = false,
             predictiveBack = predictiveBack,
             content = content,
         )