fix: Disable autocomplete for registration form fields

- Add autoComplete='off' to registration form and email field
- Add autoComplete='new-password' to password fields
- Add autoComplete='off' to phone number field

frontend/src/pages/LoginPage.tsx

@@ -194,7 +194,7 @@ export default function LoginPage() {
                 </div>
               </form>
             ) : (
-              <form className={`login-panel__section ${showRegisterValidation ? "show-validation" : ""}`} onSubmit={handleRegister}>
+              <form className={`login-panel__section ${showRegisterValidation ? "show-validation" : ""}`} onSubmit={handleRegister} autoComplete="off">
                 <div className="field-grid">
                   <label className="field field--wide field--required">
                     <span>Firmenname</span>
@@ -259,6 +259,7 @@ export default function LoginPage() {
                       onChange={(event) =>
                         setRegistration((current) => ({ ...current, email: event.target.value }))
                       }
+                      autoComplete="off"
                       required
                     />
                   </label>
@@ -271,6 +272,7 @@ export default function LoginPage() {
                         setRegistration((current) => ({ ...current, phoneNumber: event.target.value }))
                       }
                       placeholder="z. B. 04531 181424"
+                      autoComplete="off"
                       required
                     />
                   </label>
@@ -282,6 +284,7 @@ export default function LoginPage() {
                       onChange={(event) =>
                         setRegistration((current) => ({ ...current, password: event.target.value }))
                       }
+                      autoComplete="new-password"
                       required
                     />
                   </label>
@@ -305,6 +308,7 @@ export default function LoginPage() {
                           passwordConfirmation: event.target.value,
                         }))
                       }
+                      autoComplete="new-password"
                       required
                     />
                   </label>