Remove 00 for hours or Minutes when the actual duration is less than an hour for Time formatter

I fixed this in my theme by creating the file "duration-field-duration-time.html.twig" in my custom themes template folder (/web/themes/custom/mytheme/templates/duration-field-duration-time.html.twig).

Use this content in your "duration-field-duration-time.html.twig" to only print hours when available:

{% if year or month or day %}
{{ year }}/{{ month }}/{{day}}
{% endif %}

{% if hour or minute or second %}
  {% if hour > 0 %}
    {{ hour }}:{{ minute }}:{{ second }}
  {% else %}
    {{ minute }}:{{ second }}
  {% endif %}
{% endif %}