fix(lion-input-tel): polish/cleanup input-tel(-dropdown)

packages/ui/components/input-tel-dropdown/src/LionInputTelDropdown.js

@@ -177,9 +177,7 @@ export class LionInputTelDropdown extends LionInputTel {
 
         return {
           template: templates.dropdown(this._templateDataDropdown),
-          afterRender: () => {
-            this.__syncRegionWithDropdown();
-          },
+          afterRender: this.__syncRegionWithDropdown,
         };
       },
     };
@@ -204,8 +202,6 @@ export class LionInputTelDropdown extends LionInputTel {
   _onPhoneNumberUtilReady() {
     super._onPhoneNumberUtilReady();
     this.__createRegionMeta();
-    // render dropdown (trigger render of prefix slot via SlotMixin)
-    this.requestUpdate();
   }
 
   /**
@@ -233,19 +229,27 @@ export class LionInputTelDropdown extends LionInputTel {
     /**
      * Contains everything needed for rendering region options:
      * region code, country code, display name according to locale, display name
+     * @private
      * @type {RegionMeta[]}
      */
     this.__regionMetaList = [];
 
     /**
      * A filtered `this.__regionMetaList`, containing all regions provided in `preferredRegions`
+     * @private
      * @type {RegionMeta[]}
      */
     this.__regionMetaListPreferred = [];
 
-    /** @type {EventListener} */
+    /**
+     * @protected
+     * @type {EventListener}
+     */
     this._onDropdownValueChange = this._onDropdownValueChange.bind(this);
-    /** @type {EventListener} */
+    /**
+     * @private
+     * @type {EventListener}
+     */
     this.__syncRegionWithDropdown = this.__syncRegionWithDropdown.bind(this);
   }
 
@@ -284,6 +288,9 @@ export class LionInputTelDropdown extends LionInputTel {
     }
   }
 
+  /**
+   * @protected
+   */
   _initModelValueBasedOnDropdown() {
     if (!this._initialModelValue && !this.dirty && this._phoneUtil) {
       const countryCode = this._phoneUtil.getCountryCodeForRegionCode(this.activeRegion);

packages/ui/components/input-tel/src/LionInputTel.js

@@ -28,7 +28,6 @@ export class LionInputTel extends LocalizeMixin(LionInput) {
     formatCountryCodeStyle: { type: String, attribute: 'format-country-code-style' },
     activeRegion: { type: String },
     _phoneUtil: { type: Object, state: true },
-    _needsLightDomRender: { type: Number, state: true },
   };
 
   static localizeNamespaces = [
@@ -171,14 +170,6 @@ export class LionInputTel extends LocalizeMixin(LionInput) {
       ? /** @type {AwesomePhoneNumber} */ (PhoneUtilManager.PhoneUtil)
       : null;
 
-    /**
-     * Helper that triggers a light dom render aligned with update loop.
-     * TODO: combine with render fn of SlotMixin
-     * @protected
-     * @type {number}
-     */
-    this._needsLightDomRender = 0;
-
     if (!PhoneUtilManager.isLoaded) {
       PhoneUtilManager.loadComplete.then(() => {
         this._onPhoneNumberUtilReady();