Invalid identifier causes "Generate missing Java member" to fail

If you include a invalid identifier (eg. a keyword) as part of a reference in a Qute template, an error is logged, since the "Generate missing Java member" CodeAction fails.

To reproduce this issue, do the following in a Quarkus project with the Qute extension installed:

Make a class:

package org.acme;

public class Book {
  private String title;
  public Book() {}
}

then a template:

{@org.acme.Book book}

{book.short}

The error should appear

Reproduce the failure in a Quarkus project with the Qute extension using the Book class and template shown in the issue. Start at the “Generate missing Java member” CodeAction and trace how the invalid identifier short is handled; done means the CodeAction no longer fails or logs an error for this template.