fix: fix the translations

* fix the translation in loginuserpass page for einfra theme

dictionaries/einfra.definition.json

@@ -24,5 +24,17 @@
   "user_pass_text": {
     "en": "A service has requested you to authenticate yourself. </br>Please enter your login and password in the form below.",
     "cs": "Služba požaduje vaši identifikaci. Prosím vložte svůj login a heslo, které jste si zvolili během registrace."
+  },
+  "user_pass_header": {
+    "en": "Enter your login and password",
+    "cs": "Vložte svůj login a heslo"
+  },
+  "loginuserpass_error_title": {
+  "en": "Incorrect login or password",
+  "cs": "Neplatný login a heslo"
+  },
+  "loginuserpass_error_text": {
+    "en": "Either no user with the given login could be found, or the password you gave was wrong. Please check the login and try again.",
+    "cs": "Uživatel s daným loginem buď nebyl nalezen, nebo jste zadal špatné heslo. Prosím zkontrolujte login a zkuste se přihlásit znovu."
   }
 }

themes/einfra/core/loginuserpass.php

 <?php declare(strict_types=1);
 
-$this->data['header'] = $this->t('{login:user_pass_header}');
+$this->data['header'] = $this->t('{cesnet:einfra:user_pass_header}');
 
 if (strlen($this->data['username']) > 0) {
     $this->data['autofocus'] = 'password';
@@ -18,17 +18,13 @@ if ($this->data['errorcode'] !== null) {
 
         <strong>
             <?php
-            echo htmlspecialchars($this->t(
-        '{errors:title_' . $this->data['errorcode'] . '}',
-        $this->data['errorparams']
-    )); ?>
+            echo htmlspecialchars($this->t('{cesnet:einfra:loginuserpass_error_title}')); ?>
         </strong>
 
-        <?php
-        echo htmlspecialchars($this->t(
-        '{errors:descr_' . $this->data['errorcode'] . '}',
-        $this->data['errorparams']
-    )); ?>
+        <p>
+            <?php
+            echo htmlspecialchars($this->t('{cesnet:einfra:loginuserpass_error_text}')); ?>
+        </p>
     </div>
 
     <?php