Resolving a conflict during git rebase does not work

### Apache NetBeans version

Apache NetBeans 15

### What happened

When I resolve a conflict during a git rebase Netbeans "gets stuck" in the rebasing phase:
I cannot switch the branch, error message: "Cannot checkout in the current repository state: Rebasing".
I can only commit to the detached branch.
I need to abort the rebase on the command line and instead do a git merge.

### How to reproduce

Create a project with two conflicting branches.
Git rebase one branch onto the other branch.
Solve conflict(s).
Press "OK" button.
Note: It does not matter if the rebase is done as part of a pull request, e. g. master -> origin/master or two local branches, the result is the same.

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

No / Don't know

### Operating System

Debian 11 bullseye

### JDK

OpenJDK 64-Bit Server VM Temurin-17.0.4.1+1 (build 17.0.4.1+1, mixed mode, sharing)

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

I tried to upload a sample project for you to easily reproduce the bug, but I keep getting "Something went really wrong, and we can't process that file" - happened with tar.gz and zip file.

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

No

### Code of Conduct

Yes

Reproduce the issue in Apache NetBeans 15 using two conflicting branches, then resolve the conflict and press OK as described. Trace the Git rebase integration after conflict resolution and verify that the repository exits the rebasing state without requiring a command-line abort or a merge; confirm branch checkout works afterward.

Written by the indexing model from the issue text.