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/EventRanking.razor

@@ -18,7 +18,7 @@
 else
 {
     <MudStack Spacing="4">
-        <MudPaper Elevation="2" Class="pa-6">
+        <MudPaper Elevation="2" Class="pa-3 pa-md-6">
             <MudText Typo="Typo.h5" Class="mb-4">Students by Rank</MudText>
             <MudTable Items="_students" Hover="true" Striped="true" Breakpoint="Breakpoint.Sm" LoadingProgressColor="Color.Info">
         <HeaderContent>
@@ -64,7 +64,7 @@ else
             </MudTable>
         </MudPaper>
 
-        <MudPaper Elevation="2" Class="pa-6">
+        <MudPaper Elevation="2" Class="pa-3 pa-md-6">
             <MudText Typo="Typo.h5" Class="mb-4">Events by Student</MudText>
             <MudTable Items="_eventStudentRankings" Hover="true" Striped="true" Breakpoint="Breakpoint.Sm" LoadingProgressColor="Color.Info">
         <HeaderContent>