Trigger search index builds before asserting metadata

[ricellis]

Checklist

• [x] Tick to sign-off your agreement to the Developer Certificate of Origin (DCO) 1.1
• [x] Added tests for code changes or test/build only changes
• [x] Updated the change log file (CHANGES.md|CHANGELOG.md) or test/build only changes
• [x] Completed the PR template below:

Description

Updated _search_info tests to trigger index build

For PRs without an associated issue and/or test/build issues

1. Steps to reproduce and the simplest code sample possible to demonstrate the issue

Run tests:

• tests.unit.design_document_tests.DesignDocumentTests.test_get_search_disk_size
• tests.unit.design_document_tests.DesignDocumentTests.test_get_search_info

2. What you expected to happen

Tests to pass

3. What actually happened

Assertions fail with:

• False is not true : The disk_size should be greater than 0.

Approach

Update tests to ensure a search index build is triggered before asserting metadata.

Schema & API Changes

• "No change"

Security and Privacy

• "No change"

Testing

• Modified existing tests to trigger search index build.

Monitoring and Logging

• "No change"