Cannot auto indent in C++

### Apache NetBeans version

Apache NetBeans 15

### What happened

When developing in a C++ file and hitting 'enter' to add a new line of code, the text cursor does not respect the current indentation. Instead, the text cursor starts from the beginning of the line.

https://user-images.githubusercontent.com/1699315/193558138-ee2b6422-a163-4fcb-971e-b1c6153e3480.mp4


### How to reproduce

Create a new C++ project: File -> Create new Project -> C/C++ -> Lightweight C/C++ Project

Once the project is created, create a new C++ file and start coding on it. You will see the auto indentation is not respected.

### Did this work correctly in an earlier version?

No / Don't know

### Operating System

Ubuntu 20.04.5 (Kernel version 5.4.0-126-generic)

### JDK

11.0.16

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

This bug occurs every time.

### Are you willing to submit a pull request?

No

### Code of Conduct

Yes

Reproduce the issue by creating a Lightweight C/C++ Project, opening a new C++ file, and pressing Enter while coding. Trace the C++ editor's indentation handling; done means a new line preserves the current indentation instead of starting at column zero.

Written by the indexing model from the issue text.