build: fix typo 'log4j-1.2-api.vetsion' property key in root pom #7609

Summary

A property key in the root pom.xml is misspelled, which can cause silent property-resolution failures.

Evidence

• pom.xml:168: <log4j-1.2-api.vetsion>2.17.2</log4j-1.2-api.vetsion> — the key is spelled vetsion instead of version.
• If any other file references ${log4j-1.2-api.version} (correct spelling), it will resolve to nothing and fall back to an empty value.

Action

1. Search the whole repo for both ${log4j-1.2-api.version} and ${log4j-1.2-api.vetsion} references.
2. If the property is actually referenced (correct spelling elsewhere), rename the key to log4j-1.2-api.version and update all usages.
3. If it is unused entirely, delete the property.
4. While here, verify the log4j:log4j exclusion under zookeeper (pom.xml:368-372) is still required by the current zookeeper version; remove it if obsolete.

Acceptance

• Property key spelled correctly or removed.
• No broken ${...} references remain.
• Build green.

Related

• [Cleanup] Remove the orphaned shenyu-registry-consul module left behind by the Consul externalization #7583 (dependency cleanup umbrella)