Bulk delete fixes

[LTA-Thinking]

Description

Fixes two bugs in bulk delete:

• Improper scoping for search service
• Loading full resources for deletions

Related issues

Addresses [issue #].

Testing

Still need to test

FHIR Team Checklist

• Update the title of the PR to be succinct and less than 65 characters
• Add a milestone to the PR for the sprint that it is merged (i.e. add S47)
• Tag the PR with the type of update: Bug, Build, Dependencies, Enhancement, New-Feature or Documentation
• Tag the PR with Open source, Azure API for FHIR (CosmosDB or common code) or Azure Healthcare APIs (SQL or common code) to specify where this change is intended to be released.
• Tag the PR with Schema Version backward compatible or Schema Version backward incompatible or Schema Version unchanged if this adds or updates Sql script which is/is not backward compatible with the code.
• CI is green before merge
• Review squash-merge requirements

Semver Change (docs)

Patch|Skip|Feature|Breaking (reason)

[mikaelweave]

Approved - a couple suggestions which can come in follow up PR:

• extend onlyIds to Cosmos backed (already implemented through query projection)
• test to show resource is blank for SQL when onlyIds is specified for SQL

[LTA-Thinking]

Approved - a couple suggestions which can come in follow up PR:

• extend onlyIds to Cosmos backed (already implemented through query projection)
• test to show resource is blank for SQL when onlyIds is specified

onlyIds is already supported in Cosmos, it uses the existing QueryProjection system.
Agreed that more tests would be good.