Add admin endpoint to delete bundle backtest requests and implement related UI functionality + Add job resilient

src/Managing.Infrastructure.Database/PostgreSql/PostgreSqlBacktestRepository.cs

@@ -926,6 +926,20 @@ public class PostgreSqlBacktestRepository : IBacktestRepository
         }
     }
 
+    public async Task DeleteBundleBacktestRequestByIdAsync(Guid id)
+    {
+        var entity = await _context.BundleBacktestRequests
+            .AsTracking()
+            .FirstOrDefaultAsync(b => b.RequestId == id)
+            .ConfigureAwait(false);
+
+        if (entity != null)
+        {
+            _context.BundleBacktestRequests.Remove(entity);
+            await _context.SaveChangesAsync().ConfigureAwait(false);
+        }
+    }
+
     public IEnumerable<BundleBacktestRequest> GetBundleBacktestRequestsByStatus(BundleBacktestRequestStatus status)
     {
         var entities = _context.BundleBacktestRequests