fix: allow dynamic parameters to consider the prebuilds user an owner (coder#18529)

This Pull request allows dynamic parameters to list system users in its
search for workspace owners. This is necessary to allow prebuilds to
reconcile prebuilt workspaces and to delete them.

Author: SasSwart

coderd/dynamicparameters/render.go

@@ -250,7 +250,7 @@ func (r *dynamicRenderer) getWorkspaceOwnerData(ctx context.Context, ownerID uui
 	mem, err := database.ExpectOne(r.db.OrganizationMembers(ctx, database.OrganizationMembersParams{
 		OrganizationID: r.data.templateVersion.OrganizationID,
 		UserID:         ownerID,
-		IncludeSystem:  false,
+		IncludeSystem:  true,
 	}))
 	if err != nil {
 		return err