[Task] — K8s ingress parsers & `IngressReconciler` have zero test

• severity: High; files: shenyu-kubernetes-controller/src/main/java/org/apache/shenyu/k8s/reconciler/IngressReconciler.java:79, .../k8s/parser/IngressParser.java:40, .../parser/DivideIngressParser.java:69, .../parser/DubboIngressParser.java, .../parser/GrpcParser.java, .../parser/SofaParser.java, .../parser/WebSocketParser.java, .../parser/ContextPathParser.java
• description: The 4 sibling reconcilers (Endpoints, DivideIngress, WebSocket, Dubbo) ARE tested, but all parsers and IngressReconciler itself are untested. These translate V1Ingress → ShenYu selector/rule.
• suggested_fix: Add IngressReconcilerTest + parser tests.

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Identified during the 2026-08-02 deep re-scan; full list in docs/scan2-2026-08-02/00-consolidated-critical-high.md.