Refactor collection initializers to use C# 12 collection expressions

This commit updates various files across the Core and WebApp projects to replace traditional collection initializers with C# 12 collection expressions. Changes include modifications to EventAssignment.cs, TeamScheduler_DecisionTree.cs, CareerField.cs, EventDefinition.cs, and several components in the WebApp. These updates enhance code readability and maintainability by adhering to modern C# syntax standards.

WebApp/Components/Features/Teams/Edit.razor

@@ -71,7 +71,9 @@
             .Include(e => e.Event)
             .Include(e => e.Students)
             .FirstOrDefaultAsync(m => m.Id == Id);
-        _students = await Context.Students.ToListAsync();
+        _students = await Context.Students
+            .AsNoTracking()
+            .ToListAsync();
         _selectedStudents = Team?.Students.ToList();
 
         if (Team is null)

WebApp/Components/Features/Teams/Printout.razor

@@ -218,6 +218,7 @@ else
     {
         _teams
                 = await Context.Teams
+                    .AsNoTracking()
                     .Include(e => e.Event)
                     .Include(e => e.Students)
                     .OrderByEventFormatFirst()
@@ -228,6 +229,7 @@ else
         _maxTeamSize = _teams.Max(t => t.Students.Count);
         _students = 
             await Context.Students
+                .AsNoTracking()
                 .Include(e => e.Teams)
                 .ThenInclude(e => e.Captain)
                 .Include(e => e.EventRankings)