DEV: Co-locate select-kit component templates (#20779)

app/assets/javascripts/select-kit/addon/components/period-chooser/period-chooser-header.hbs

@@ -0,0 +1,9 @@
+<h2 class="selected-name" title={{this.title}} role="option">
+  {{period-title
+    this.value
+    showDateRange=true
+    fullDay=this.selectKit.options.fullDay
+  }}
+</h2>
+
+{{d-icon this.caretIcon class="caret-icon"}}

app/assets/javascripts/select-kit/addon/components/period-chooser/period-chooser-header.js

@@ -1,9 +1,7 @@
 import DropdownSelectBoxHeaderComponent from "select-kit/components/dropdown-select-box/dropdown-select-box-header";
 import discourseComputed from "discourse-common/utils/decorators";
-import layout from "select-kit/templates/components/period-chooser/period-chooser-header";
 
 export default DropdownSelectBoxHeaderComponent.extend({
-  layout,
   classNames: ["period-chooser-header"],
 
   @discourseComputed("selectKit.isExpanded")

app/assets/javascripts/select-kit/addon/components/period-chooser/period-chooser-row.hbs

@@ -0,0 +1,9 @@
+<span class="selection-indicator"></span>
+
+<span class="period-title">
+  {{period-title
+    this.rowValue
+    showDateRange=true
+    fullDay=this.selectKit.options.fullDay
+  }}
+</span>

app/assets/javascripts/select-kit/addon/components/period-chooser/period-chooser-row.js

@@ -1,10 +1,8 @@
 import DropdownSelectBoxRowComponent from "select-kit/components/dropdown-select-box/dropdown-select-box-row";
 import I18n from "I18n";
 import discourseComputed from "discourse-common/utils/decorators";
-import layout from "select-kit/templates/components/period-chooser/period-chooser-row";
 
 export default DropdownSelectBoxRowComponent.extend({
-  layout,
   classNames: ["period-chooser-row"],
 
   @discourseComputed("rowName")