HCL autoformat wants multi-lined array to be grouped by themselves

Perhaps this is intentional. but it seems that HCL autoformatting (i.e. the `terraform fmt` command) wants to group multi-lined arrays in separate blocks. For example, consider the following HCL:

```
data "aws_iam_policy_document" "test" {
statement {
actions = [
"s3:GetObject",
"s3:ListBucket",
]
resources = ["*"]
}
}
```

`terraform fmt` wants to change this to:

```
data "aws_iam_policy_document" "test" {
statement {
actions = [
"s3:GetObject",
"s3:ListBucket",
]

resources = ["*"]
}
}
```

Would it be possible to disable this behavior? If this behavior is intentional then I guess I can live with it.

Start by reproducing the formatting change with the HCL example and the `terraform fmt` behavior described in the issue. Trace the formatter entry point that handles multi-line arrays and determine whether the grouping can be made configurable. Done means the requested behavior is either disableable or the issue is clearly documented as intentional, with coverage for the example.

Written by the indexing model from the issue text.