@JsonbTransient does not work on abstract classes

**Describe the bug**

@JsonbTransient work on interfaces but not on abstract classes.

**To Reproduce**
reproducer:

https://github.com/rmanibus/quarkus_12926

**Expected behavior**
Fields annotated with @JsonbTransient are ignored.

**System information:**
- OS: [e.g. Linux, Windows, Mac]
- Java Version: [e.g. 8, 11]
- Yasson Version: [e.g. 1.0.5]

**Additional context**
Add any other context about the problem here.

Start by running the reproducer at https://github.com/rmanibus/quarkus_12926 and compare @JsonbTransient behavior on interfaces and abstract classes. Trace the relevant Yasson handling for annotated fields, then add or locate a regression test demonstrating that fields on abstract classes are ignored as expected.

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