Fix dependency aggregation pagination when sorting by license

What does this MR do and why?

Fix dependency aggregation pagination when sorting by license

Keyset pagination uses relation[attribute_name] to get the value to insert into the cursor. When sorting by licenses, we want this to be the spdx_identifier but currently it is getting the entire licenses jsonb object. This causes a 500 error when trying to navigate to the second page while sorting by license. To fix this, we make the spdx_identifier available through the select statement as primary_license_spdx_identifier and we change the name of the ColumnOrderDefinition for licenses to this so that it will be inserted into the cursor.

This feature is currently behind a feature flag, so a changelog is not needed.

This change has no effect on the database query plan.

Before: https://console.postgres.ai/gitlab/gitlab-production-main/sessions/29722/commands/92261

After: https://console.postgres.ai/gitlab/gitlab-production-main/sessions/29722/commands/92262

Fixes: #470441 (closed)

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Screenshots or screen recordings

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Before	After
Screen_Recording_2024-07-08_at_3.14.18_PM	Screen_Recording_2024-07-08_at_3.13.24_PM

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

1. Enable rewrite_sbom_occurrences_query feature flag
2. Go to the group dependency list
3. Sort by "license"
4. Go to the next page
5. Success