discourse/app/assets/javascripts/admin/addon/components/site-setting.hbs

<div class="setting-label">
  <h3>
    {{this.settingName}}

    {{#if this.staffLogFilter}}
      <LinkTo
        @route="adminLogs.staffActionLogs"
        @query={{hash filters=this.staffLogFilter force_refresh=true}}
        title={{i18n "admin.settings.history"}}
      >
        <span class="history-icon">
          {{d-icon "history"}}
        </span>
      </LinkTo>
    {{/if}}
  </h3>

  {{#if this.defaultIsAvailable}}
    <DButton
      class="btn-link"
      @action={{this.setDefaultValues}}
      @translatedLabel={{this.setting.setDefaultValuesLabel}}
    />
  {{/if}}
</div>

<div class="setting-value">
  {{component
    this.componentName
    setting=this.setting
    value=this.buffered.value
    validationMessage=this.validationMessage
    preview=this.preview
    isSecret=this.isSecret
    allowAny=this.allowAny
  }}
</div>

{{#if this.dirty}}
  <div class="setting-controls">
    <DButton class="ok" @action={{this.update}} @icon="check" />
    <DButton class="cancel" @action={{this.cancel}} @icon="times" />
  </div>
{{else if this.setting.overridden}}
  {{#if this.setting.secret}}
    <DButton @action={{this.toggleSecret}} @icon="far-eye-slash" />
  {{/if}}

  <DButton
    class="btn-default undo"
    @action={{this.resetDefault}}
    @icon="undo"
    @label="admin.settings.reset"
  />
{{/if}}