git branch/tag popup shows deleted branches

### Apache NetBeans version

Apache NetBeans 23

### What happened

Netbeans offers some kind of quick switch to branch popup entries. This list shows deleted branches as well. The **switch to branch** dialog shows the correct list of available branches. So those branch popups are cached somehow but not refreshed.

How can I manually refresh this list?

Or is this even a bug, showing those deleted branches?

### Language / Project Type / NetBeans Component

maven multi module project using git

### How to reproduce

create a branch "test"
switch to it
make some changes
commit changes
switch back to master (now there should be a popup entry under Git/Branch Tag/**switch to branch test**)
delete branch "test"

the popup entry Git/Branch Tag/**switch to branch test** is still there

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

No / Don't know

### Operating System

windows 11

### JDK

21.0.4; OpenJDK 64-Bit Server VM 21.0.4+7-LTS (IDE)

### Apache NetBeans packaging

Apache NetBeans provided installer

### Anything else

_No response_

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

No

Reproduce the issue in Apache NetBeans 23 using the Git/Branch Tag/switch to branch steps described, then trace how that popup obtains and refreshes branch entries. Done means deleting a branch removes it from the popup without leaving a stale switch-to-branch entry.

Written by the indexing model from the issue text.