Example to test YANG features and small bug fix to Yangkit#1

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Joaquin-Ca wants to merge 6 commits intonetwork-analytics:feature/yangkit-complete-validationfrom

Joaquin-Ca:Feature-Example

Commits on Apr 21, 2025

update antl4-runtime to 4.11.1
ahuangfeng
committed

Commits on May 22, 2025

Comment local tests and force java 11
ahuangfeng
committed

Commits on May 23, 2025

fix: root data not mandatory and mandatory statements checks only on yang data present in messages
ahuangfeng
committed
fix: augmentations within same yang module without when statements valid
ahuangfeng
committed

Commits on May 24, 2025

clean up examples
ahuangfeng
committed

Commits on Oct 1, 2025

added example to test YANG features to yangkit-examples and modified YangAbstractDataContainer to skip inactive nodes
joaquin
committed