95587: handled not modifier for chained expressions

[rajithaalurims]

Description

Service returns 500 error when a not modifier is used with chained expressions.

Related issues

Addresses [issue #95587].

Testing

Creating data
Created two devices with different device type codes. 861840031 and 86184003.
Created two Observation. Once with device type 861840031 and another one with device type 86184003.
Tests
https://localhost:44348/Observation?device:Device.type:not=861840031 - Returned Observation that has Device.type 86184003.
https://localhost:44348/Observation?device:Device.type:not=86184003 - Returned Observation that has Device.type 861840031
https://localhost:44348/Observation?device:Device.type:not=aaa - Returned both Observations I created above.
https://localhost:44348/Observation?device:Device.type=aaa - No Observations returned
https://localhost:44348/Observation?device:Device.type=86184003 - Returned One observation with correct type
https://localhost:44348/Observation?device:Device.type=861840031 - Returned One observation with correct type
https://localhost:44348/Device?type=86184003 - Returned Device with specified type.
https://localhost:44348/Device?type:not=86184003 - Returned Devices that have no type and also device with type not equals to specified value
https://localhost:44348/HealthcareService?_has:PractitionerRole:service:active:not=false - Returned success response but no data as expected.

FHIR Team Checklist

• Update the title of the PR to be succinct and less than 50 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, Dependencies, Enhancement, or New-Feature
• Tag the PR with Azure API for FHIR if this will release to the Azure API for FHIR managed service (CosmosDB or common code related to service)
• Tag the PR with Azure Healthcare APIs if this will release to the Azure Healthcare APIs managed service (Sql server or common code related to service)
• CI is green before merge
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Semver Change (docs)

Patch|Skip|Feature|Breaking (reason)