Code Completion and syntax highlighting stops working when selecting a dollar quote including a semicolon

### Description

Syntax highlighting wont work, and neither will autocompletion

### DBeaver Version

Community Edition 25.2.0.202508311659

### Operating System

OS Name Microsoft Windows 11 Pro Version 10.0.26100 Build 26100

### Database and driver

1. Database name and version: PostgreSQL 15.14
2. Driver name and version: PostgreSQL JDBC Driver 42.7.2

### Steps to reproduce

Can be tested like so:

```
create table test_table (
id bigint primary key,
title varchar(255) unique not null
);

insert into test_table (id, title)
values(1, 'a'), (2, 'b'), (3, 'c')
;

select
$$test;$$
from test_table
```

### Additional context

_No response_