How to ignore specific metadata using ignore_changes block?

The thing is I know Terraform ignore_changes block only supports static lists or in another words, static indices mapping to items. Secondly, I need to be able to ignore specific metadata based on a regex.

I tried to use a local value and then use it in a list but it returned with the same error.

 locals {
   ignore_gke_metadata_changes = [
     for x in google_compute_project_metadata.metadata.metadata : x.key if regex("^gke-dku[0-9]+$", x.key)
   ]
 }

 lifecycle {
   ignore_changes = local.ignore_gke_metadata_changes
 }

Edit:

Here's a sample of the error returned when I try to run a plan:

16:     ignore_changes = local.ignore_gke_metadata_changes
 
A static list expression is required.