docs(material/datepicker): Update close calendar label (#26738)

Previously, the close calendar label was not updating correctly when switching languages. This commit fixes that issue.

Fixes: #25021
(cherry picked from commit ff27a93)

src/components-examples/material/datepicker/datepicker-locale/datepicker-locale-example.ts

@@ -1,4 +1,4 @@
-import {Component, Inject} from '@angular/core';
+import {Component, Inject, OnInit} from '@angular/core';
 import {
   MAT_MOMENT_DATE_FORMATS,
   MomentDateAdapter,
@@ -11,6 +11,7 @@ import {MatInputModule} from '@angular/material/input';
 import {MatFormFieldModule} from '@angular/material/form-field';
 import 'moment/locale/ja';
 import 'moment/locale/fr';
+import {MatDatepickerIntl} from '@angular/material/datepicker';
 
 /** @title Datepicker with different locale */
 @Component({
@@ -34,15 +35,26 @@ import 'moment/locale/fr';
   standalone: true,
   imports: [MatFormFieldModule, MatInputModule, MatDatepickerModule, MatButtonModule],
 })
-export class DatepickerLocaleExample {
+export class DatepickerLocaleExample implements OnInit {
   constructor(
     private _adapter: DateAdapter<any>,
+    private _intl: MatDatepickerIntl,
     @Inject(MAT_DATE_LOCALE) private _locale: string,
   ) {}
 
+  ngOnInit() {
+    this.updateCloseButtonLabel('カレンダーを閉じる');
+  }
+
   french() {
     this._locale = 'fr';
     this._adapter.setLocale(this._locale);
+    this.updateCloseButtonLabel('Fermer le calendrier');
+  }
+
+  updateCloseButtonLabel(label: string) {
+    this._intl.closeCalendarLabel = label;
+    this._intl.changes.next();
   }
 
   getDateFormatString(): string {