Fix openCypher neighbor expansion and counts

[kmcginnes]

Description

Fixes openCypher issues around neighbor expansion and neighbor counts.

• Fixes issue where neighbor query returned edges with the wrong type for source and target types
• Fixes neighbor count to respect limits
• Fixes limit and offset in neighbor query
• Fixes edges in neighbor query to return all edges between source and target nodes
• Fixes limit and offset calculations in expand side bar to use typed counts rather than total counts
• Better formatting of queries in logic and tests

Validation

• Tested many expansion options
• Tested multiple expansions with limit (paging results)
• Tested with bidirectional edges

Related Issues

• Resolves [Task] Optimize the openCypher query for neighbors #389
• Resolves [Task] Optimize the openCypher query for neighbor types and count #343

Check List

• I confirm that my contribution is made under the terms of the Apache 2.0
  license.
• I have run pnpm checks to ensure code compiles and meets standards.
• I have run pnpm test to check if all tests are passing.
• I have covered new added functionality with unit tests if necessary.
• I have added an entry in the Changelog.md.

[vkagamlyk]

👍