Refactor MudPaper component styling across various features for consistency

Updated the MudPaper component styling in multiple files to use a consistent padding class of "pa-3 pa-md-6" instead of "pa-6". This change enhances the visual consistency of the UI across the Calendar, Events, Students, and Teams components, improving the overall user experience.

WebApp/Components/Features/Students/Registration.razor

@@ -19,7 +19,7 @@
     </ActionButtons>
 </PageHeader>
 
-<MudPaper Elevation="2" Class="pa-6">
+<MudPaper Elevation="2" Class="pa-3 pa-md-6">
     <MudText Typo="Typo.body2" Class="mb-2">
         <MudIcon Icon="@AppIcons.Captain" Size="Size.Small" /> = Team Captain
     </MudText>
@@ -78,8 +78,9 @@
                     var teamsToDisplay = _showRegionalOnly
                         ? context.Item.Teams.Where(t => t?.Event is { RegionalEvent: true }).OrderBy(t => t.Event.Name)
                         : context.Item.Teams.Where(t => t?.Event != null).OrderBy(t => t.Event.Name);
-
-                    foreach (var team in teamsToDisplay)
+                }
+                <div class="d-flex flex-wrap" style="gap: 0.25rem;">
+                    @foreach (var team in teamsToDisplay)
                     {
                         var isCaptain = team.Captain != null && team.Captain.Equals(context.Item.Student);
                         var teamMembers = string.Join(", ", team.Students.Select(s => s.FirstName));
@@ -97,7 +98,7 @@
                             </MudChip>
                         </MudTooltip>
                     }
-                }
+                </div>
             </CellTemplate>
         </TemplateColumn>
     </Columns>