fix(mcp): tell agents when create_entity needs approval

[Vishnuujain]

Describe your changes:

Fixes #33458

• create_entity already returns entityStatus: Draft and the inherited reviewers when a term goes into approval, but the tool description said "Writes take effect immediately" and nothing told the agent what Draft means, so it still reported "created".
• Added one sentence to the create_entity description: when the response has Draft or In Review and lists reviewers, tell the user it was submitted to those reviewers for approval.
• The approval task is not in the response: the workflow starts after the create returns, so there is no task yet at that point.

Type of change:

• Bug fix

Tests:

Unit tests

• CreateEntityToolTest, McpSdkUpgradeTest: 44/44 pass. Description-only change, no new test.

Manual testing performed

1. Restarted the local server on this branch: MCP tools/list returns the new create_entity description.
2. create_entity for a glossary term in a glossary with reviewers returns "entityStatus":"Draft" plus the inherited reviewers; the term moves to In Review once the workflow picks it up.

Checklist:

• I have read the CONTRIBUTING document.
• My PR is linked to a GitHub issue via Fixes #33458 above.

[github-actions]

✅ PR checks passed

The linked issue has a description and all required Shipping project fields set. Thanks!

[gitar-bot]

Code Review ✅ Approved

🟡 Medium risk · The create_entity instruction changes agent reporting for approval-pending entities; misreading status or reviewer fields could incorrectly tell users approval was submitted.

Adds one sentence to the create_entity MCP tool description so agents tell users when a term was submitted to reviewers for approval (Draft or In Review status with listed reviewers) instead of reporting it as created. No issues found.

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