Refactor CustomExpansionTile and SpaceDetailsDialogHelper for improved functionality and UI consistency

- Updated CustomExpansionTile to enhance selection state handling and UI responsiveness.
- Integrated success and error snackbars in SpaceDetailsDialogHelper for better user feedback during space creation and updates.
- Removed redundant comments and improved code readability.

lib/common/widgets/custom_expansion_tile.dart

@@ -5,19 +5,20 @@ class CustomExpansionTile extends StatefulWidget {
   final String title;
   final List<Widget>? children;
   final bool initiallyExpanded;
-  final bool isSelected; // Add this to track selection
-  final bool? isExpanded; // External control over expansion
-  final ValueChanged<bool>? onExpansionChanged; // Notify when expansion changes
-  final VoidCallback? onItemSelected; // Callback for selecting the item
+  final bool isSelected;
+  final bool? isExpanded;
+  final ValueChanged<bool>? onExpansionChanged;
+  final VoidCallback? onItemSelected;
 
-  CustomExpansionTile({
+  const CustomExpansionTile({
+    super.key,
     required this.title,
     this.children,
     this.initiallyExpanded = false,
-    this.isExpanded, // Allow external control over expansion
-    this.onExpansionChanged, // Notify when expansion changes
-    this.onItemSelected, // Trigger item selection when name is tapped
-    required this.isSelected, // Add this to initialize selection state
+    this.isExpanded,
+    this.onExpansionChanged,
+    this.onItemSelected,
+    required this.isSelected,
   });
 
   @override
@@ -25,7 +26,7 @@ class CustomExpansionTile extends StatefulWidget {
 }
 
 class CustomExpansionTileState extends State<CustomExpansionTile> {
-  bool _isExpanded = false; // Local expansion state
+  bool _isExpanded = false;
 
   @override
   void initState() {
@@ -36,7 +37,6 @@ class CustomExpansionTileState extends State<CustomExpansionTile> {
   @override
   void didUpdateWidget(CustomExpansionTile oldWidget) {
     super.didUpdateWidget(oldWidget);
-    // Sync local state with external control of expansion state
     if (widget.isExpanded != null && widget.isExpanded != _isExpanded) {
       setState(() {
         _isExpanded = widget.isExpanded!;
@@ -44,7 +44,6 @@ class CustomExpansionTileState extends State<CustomExpansionTile> {
     }
   }
 
-  // Utility function to capitalize the first letter of the title
   String _capitalizeFirstLetter(String text) {
     if (text.isEmpty) return text;
     return text[0].toUpperCase() + text.substring(1);
@@ -56,7 +55,6 @@ class CustomExpansionTileState extends State<CustomExpansionTile> {
       children: [
         Row(
           children: [
-            // Expand/collapse icon, now wrapped in a GestureDetector for specific onTap
             if (widget.children != null && widget.children!.isNotEmpty)
               GestureDetector(
                 onTap: () {
@@ -70,38 +68,33 @@ class CustomExpansionTileState extends State<CustomExpansionTile> {
                       ? Icons.keyboard_arrow_down
                       : Icons.keyboard_arrow_right,
                   color: ColorsManager.lightGrayColor,
-                  size: 16.0, // Adjusted size for better alignment
+                  size: 16,
                 ),
               ),
-            // The title text, wrapped in GestureDetector to handle selection
             Expanded(
               child: GestureDetector(
                 onTap: () {
                   if (widget.onItemSelected != null) {
-                    widget.onItemSelected!();
+                    widget.onItemSelected!.call();
                   }
                 },
                 child: Text(
                   _capitalizeFirstLetter(widget.title),
                   style: TextStyle(
                     color: widget.isSelected
-                        ? ColorsManager
-                            .blackColor // Change color to black when selected
-                        : ColorsManager
-                            .lightGrayColor, // Gray when not selected
-                    fontWeight: FontWeight.w400,
+                        ? ColorsManager.blackColor
+                        : ColorsManager.lightGrayColor,
+                    fontWeight:
+                        widget.isSelected ? FontWeight.w600 : FontWeight.w400,
                   ),
                 ),
               ),
             ),
           ],
         ),
-        // The expanded section (children) that shows when the tile is expanded
-        if (_isExpanded &&
-            widget.children != null &&
-            widget.children!.isNotEmpty)
+        if (_isExpanded && widget.children != null && widget.children!.isNotEmpty)
           Padding(
-            padding: const EdgeInsets.only(left: 24.0), // Indented children
+            padding: const EdgeInsets.only(left: 24),
             child: Column(
               crossAxisAlignment: CrossAxisAlignment.start,
               children: widget.children!,