[BUG] Index templates uploaded via curl's PUT aren't listed in Dashboards's Templates page

[q2dg]

Describe the bug

I have an index template written in a file ("mytemplate.json" and I upload it to OpenSearch via curl, like this:

curl -X PUT -k -u "admin:admin" -H "content-type:application/json" https://127.0.0.1:9200/_template/mytemplate -d @mytemplate.json

I get the "{"acknowledged":true}" answer and I see it's uploaded correctly because I do this...:

curl -k -u "admin:admin" https://127.0.0.1:9200/_cat/templates

...and I get this:

mytemplate            [packets-*] 0                  
ss4o_metrics_template [ss4o_metrics-*-*] 1          1       []
tenant_template       [.kibana_-*_*, .kibana_0*_*, .kibana_1*_*, .kibana_2*_*, .kibana_3*_*, .kibana_4*_*, .kibana_5*_*, .kibana_6*_*, .kibana_7*_*, .kibana_8*_*, .kibana_9*_*] 2147483647         []
ss4o_traces_template  [ss4o_traces-*-*] 1          1       []

But when I go (as a "admin:admin") to Dashboards' "Index management->Templates" menu, I ca'nt see this template:

Thanks!

Expected behavior
I would like to see my custom template (uploaded via PUT's curl) shown in Dashboards' "Index management->Templates" menu like any other.

OpenSearch Version
Last one, run as a Podman pod:

{
  "name" : "miOS",
  "cluster_name" : "docker-cluster",
  "cluster_uuid" : "QT5z15_8QNKsVsY0KmkMPg",
  "version" : {
    "distribution" : "opensearch",
    "number" : "2.11.1",
    "build_type" : "tar",
    "build_hash" : "6b1986e964d440be9137eba1413015c31c5a7752",
    "build_date" : "2023-11-29T21:43:10.135035992Z",
    "build_snapshot" : false,
    "lucene_version" : "9.7.0",
    "minimum_wire_compatibility_version" : "7.10.0",
    "minimum_index_compatibility_version" : "7.0.0"
  },
  "tagline" : "The OpenSearch Project: https://opensearch.org/"
}

Dashboards Version
I don't know how to see this but it's from the "latest" version image in Docker's hub

Plugins
Whichever comes by default in Docker's hub images

Host/Environment (please complete the following information):

• OS: Fedora 39
• Browser and version Firefox 122

[AMoo-Miki]

@opensearch-project/admin please move to opensearch-project/index-management-dashboards-plugin.

[dblock]

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