some code cleanup

Author: phndiaye

addon/components/o-s-s/phone-number-input.hbs

@@ -45,7 +45,7 @@
         @searchPlaceholder="Search"
         id={{this.portalId}}
         class={{concat "margin-top-px-0 phone-number-container__dropdown " this.dropdownAddressableClass}}
-        {{on-click-outside this.hideCountrySelector}}
+        {{on-click-outside this.onClickOutside}}
         {{on "click" this.noop}}
       >
         <:option as |country|>

addon/components/o-s-s/phone-number-input.ts

@@ -142,14 +142,6 @@ export default class OSSPhoneNumberInput extends BaseDropdown<OSSPhoneNumberInpu
     }
   }
 
-  @action
-  hideCountrySelector(): void {
-    this.filteredCountries = this._countries;
-    this.closeDropdown();
-    this.cleanupDrodpownAutoplacement?.();
-    document.querySelector(`#${this.portalId}`)?.remove();
-  }
-
   @action
   focusInput(): void {
     this.inputElement?.focus();
@@ -165,6 +157,13 @@ export default class OSSPhoneNumberInput extends BaseDropdown<OSSPhoneNumberInpu
     this.hideCountrySelector();
   }
 
+  private hideCountrySelector(): void {
+    this.filteredCountries = this._countries;
+    this.closeDropdown();
+    this.cleanupDrodpownAutoplacement?.();
+    document.querySelector(`#${this.portalId}`)?.remove();
+  }
+
   private validateInput(): void {
     this.invalidInputError = '';