refactor(widgets): read sheet height with MediaQuery.sizeOf

Five bottom-sheet builders capped their height with
MediaQuery.of(context).size.height, which subscribes the sheet to every
MediaQuery change — keyboard insets, text scale, brightness, padding —
not just size. For a bottom sheet the keyboard case is the one that
actually fires.

MediaQuery.sizeOf establishes a dependency on size alone. The value
read is identical, so there is no behaviour change.

Fixes #531

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ER7MeRfgMqxnaKBGDaSRWy

Author: claude

lib/widgets/drink_filter_sheets.dart

@@ -49,7 +49,7 @@ class CategoryFilterSheet extends StatelessWidget {
         return Container(
           padding: const EdgeInsets.all(16),
           constraints: BoxConstraints(
-            maxHeight: MediaQuery.of(context).size.height * 0.7,
+            maxHeight: MediaQuery.sizeOf(context).height * 0.7,
           ),
           child: Column(
             mainAxisSize: MainAxisSize.min,
@@ -156,7 +156,7 @@ class SortOptionsSheet extends StatelessWidget {
     return Container(
       padding: const EdgeInsets.all(16),
       constraints: BoxConstraints(
-        maxHeight: MediaQuery.of(context).size.height * 0.7,
+        maxHeight: MediaQuery.sizeOf(context).height * 0.7,
       ),
       child: Column(
         mainAxisSize: MainAxisSize.min,
@@ -233,7 +233,7 @@ class StyleFilterSheet extends StatelessWidget {
         return Container(
           padding: const EdgeInsets.all(16),
           constraints: BoxConstraints(
-            maxHeight: MediaQuery.of(context).size.height * 0.7,
+            maxHeight: MediaQuery.sizeOf(context).height * 0.7,
           ),
           child: Column(
             mainAxisSize: MainAxisSize.min,
@@ -382,7 +382,7 @@ class VisibilityFilterSheet extends StatelessWidget {
         return Container(
           padding: const EdgeInsets.all(16),
           constraints: BoxConstraints(
-            maxHeight: MediaQuery.of(context).size.height * 0.7,
+            maxHeight: MediaQuery.sizeOf(context).height * 0.7,
           ),
           child: Column(
             mainAxisSize: MainAxisSize.min,

lib/widgets/festival_menu_sheets.dart

@@ -85,7 +85,7 @@ class FestivalSelectorSheet extends StatelessWidget {
     return Container(
       padding: const EdgeInsets.all(16),
       constraints: BoxConstraints(
-        maxHeight: MediaQuery.of(context).size.height * 0.7,
+        maxHeight: MediaQuery.sizeOf(context).height * 0.7,
       ),
       child: Column(
         mainAxisSize: MainAxisSize.min,