♻️ Remove unneeded async methods from integration test base (#559)

* ✨ Refactor AddAsync and AddRangeAsync methods to remove unnecessary async calls

* ✨ Refactor AddAsync and AddRangeAsync to use SaveAsync for consistency

* Refactor: revert the saveChangesAsync change to original

Author: 0xharkirat

tests/WebApi.IntegrationTests/Common/IntegrationTestBase.cs

@@ -34,14 +34,14 @@ public async ValueTask InitializeAsync()
     protected async Task AddAsync<TEntity>(TEntity entity)
         where TEntity : class
     {
-        await _dbContext.AddAsync(entity, CancellationToken);
+        _dbContext.Add(entity);
         await _dbContext.SaveChangesAsync(CancellationToken);
     }
 
     protected async Task AddRangeAsync<TEntity>(IEnumerable<TEntity> entities)
         where TEntity : class
     {
-        await _dbContext.AddRangeAsync(entities, CancellationToken);
+        _dbContext.AddRange(entities);
         await _dbContext.SaveChangesAsync(CancellationToken);
     }
 
@@ -59,4 +59,4 @@ public ValueTask DisposeAsync()
         _scope.Dispose();
         return ValueTask.CompletedTask;
     }
-}
+}