Fix langchain versioned tests

[bizob2828]

Description

The langchain versioned tests are failing. Specifically around vectorstores

    # Subtest: should create vectorstore events for every similarity search call
        ok 1 - should create 3 events
        ok 2 - should create 2 langchain events
        1..2
    ok 1 - should create vectorstore events for every similarity search call # time=47.383ms
    
    # Subtest: should create span on successful vectorstore create
        ok 1 - expect truthy value
        ok 2 - segment "ROOT" should have child "Llm/vectorstore/Langchain/similaritySearch"
        1..2
    ok 2 - should create span on successful vectorstore create # time=15.991ms
    
    # Subtest: should increment tracking metric for each langchain vectorstore event
        not ok 1 - should be equal
          ---
          found: false
          wanted: true
          compare: ===
          at:
            line: 111
            column: 9
            file: vectorstore.tap.js
          stack: |
            vectorstore.tap.js:111:9
          source: |2
                  )
                  t.equal(metrics.callCount > 0, true)
            --------^
          
                  tx.end()
          ...
        
        1..1

That test is asserting the supportability metric of Supportability/Nodejs/ML/Langchain/${pkgVersion}. The issue is @langchain/core is getting tested but also the latest of @langchain/community. Since the version of @langchain/core differs the tracking metric version is different. The test needs to be updated to target the correct package version.

Expected Behavior

All tests pass

Steps to Reproduce

npm run versioned:internal langchain

[workato-integration]

https://new-relic.atlassian.net/browse/NR-271259