Spacelift should only apply the changes in the planning rather than all changes if the stack run is not confirmed for a long time

Here's one case we across:

1. Krush merge his branch that create a tracked stack run on April 26th (check the 1st screen shot)

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # module.firehose_streams["FireworkStagingCommerceEventToS3"].aws_kinesis_firehose_delivery_stream.firehose will be updated in-place
  ~ resource "aws_kinesis_firehose_delivery_stream" "firehose" {
        id             = "arn:aws:firehose:us-west-2:170553093583:deliverystream/FireworkStagingCommerceEventToS3"
        name           = "FireworkStagingCommerceEventToS3"
        tags           = {
            "Name"       = "FireworkStagingCommerceEventToS3"
            "fw:project" = "naboo"
            "fw:subteam" = "data_infra"
            "fw:team"    = "data"
        }
        # (5 unchanged attributes hidden)

      ~ extended_s3_configuration {
            # (7 unchanged attributes hidden)

          ~ processing_configuration {
                # (1 unchanged attribute hidden)

              ~ processors {
                    # (1 unchanged attribute hidden)

                  - parameters {
                      - parameter_name  = "BufferSizeInMBs" -> null
                      - parameter_value = "1" -> null
                    }

                    # (1 unchanged block hidden)
                }
            }

            # (1 unchanged block hidden)
        }

        # (1 unchanged block hidden)
    }

  # module.firehose_streams["FireworkStagingPublisherClientStatusUpdateToS3"].aws_kinesis_firehose_delivery_stream.firehose will be updated in-place
  ~ resource "aws_kinesis_firehose_delivery_stream" "firehose" {
        id             = "arn:aws:firehose:us-west-2:170553093583:deliverystream/FireworkStagingPublisherClientStatusUpdateToS3"
        name           = "FireworkStagingPublisherClientStatusUpdateToS3"
        tags           = {
            "Name"       = "FireworkStagingPublisherClientStatusUpdateToS3"
            "fw:project" = "naboo"
            "fw:subteam" = "data_infra"
            "fw:team"    = "data"
        }
        # (5 unchanged attributes hidden)

      ~ extended_s3_configuration {
            # (7 unchanged attributes hidden)

          ~ processing_configuration {
                # (1 unchanged attribute hidden)

              ~ processors {
                    # (1 unchanged attribute hidden)

                  - parameters {
                      - parameter_name  = "BufferSizeInMBs" -> null
                      - parameter_value = "1" -> null
                    }

                    # (1 unchanged block hidden)
                }
            }

            # (1 unchanged block hidden)
        }

        # (1 unchanged block hidden)
    }

  # module.firehose_streams["FireworkStagingPublisherClientUpdateToS3"].aws_kinesis_firehose_delivery_stream.firehose will be updated in-place
  ~ resource "aws_kinesis_firehose_delivery_stream" "firehose" {
        id             = "arn:aws:firehose:us-west-2:170553093583:deliverystream/FireworkStagingPublisherClientUpdateToS3"
        name           = "FireworkStagingPublisherClientUpdateToS3"
        tags           = {
            "Name"       = "FireworkStagingPublisherClientUpdateToS3"
            "fw:project" = "naboo"
            "fw:subteam" = "data_infra"
            "fw:team"    = "data"
        }
        # (5 unchanged attributes hidden)

      ~ extended_s3_configuration {
            # (7 unchanged attributes hidden)

          ~ processing_configuration {
                # (1 unchanged attribute hidden)

              ~ processors {
                    # (1 unchanged attribute hidden)

                  - parameters {
                      - parameter_name  = "BufferSizeInMBs" -> null
                      - parameter_value = "1" -> null
                    }

                    # (1 unchanged block hidden)
                }
            }

            # (1 unchanged block hidden)
        }

        # (1 unchanged block hidden)
    }

Plan: 0 to add, 3 to change, 0 to destroy.

Changes to Outputs:
  - naboo_redis_addr           = [
      - "firework-exq-staging.qerpgn.ng.0001.usw2.cache.amazonaws.com",
    ] -> null

1. You can see the planning output of the tracked stack run in 2nd screenshot, it show us there are only 3 changed resources

2. We don’t confirm the stack run, so it’s not deployed

3. We run terragrunt offline which may change the state file

4. I found the tracked run is not confirmed, so I confirmed it. (check 1st screenshot)

5. You can see the applying output of the tracked run in 3rd screenshot, it shows us there are 1 to add, 4 to change and 8 to destroy

      - weighted_routing_policy {
          - weight = 0 -> null
        }
    }

Plan: 1 to add, 4 to change, 8 to destroy.

What we expected is in a single tracked stack run, if we have 3 resources to change in planning step, there should be only 3 resources to change in applying step.