misc: add `x-amzn-query-mode` customization

[lauzadis]

Issue \

Description of changes

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions[bot]]

A new generated diff is ready to view.

• No codegen difference in the AWS SDK

[github-actions[bot]]

Affected Artifacts

Changed in size

| Artifact |Pull Request (bytes) | Latest Release (bytes) | Delta (bytes) | Delta (percentage) | | -------- | ------------------: | ---------------------: | ------------: | -----------------: | |sqs-jvm.jar|989,933|988,947|986|0.10%| |sqs-jvm.jar closure|8,823,246|8,822,260|986|0.01%|

[github-actions[bot]]

A new generated diff is ready to view.

• No codegen difference in the AWS SDK

[github-actions[bot]]

A new generated diff is ready to view.

• No codegen difference in the AWS SDK

[sonarcloud[bot]]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions[bot]]

A new generated diff is ready to view.

• No codegen difference in the AWS SDK

[github-actions[bot]]

Affected Artifacts

Changed in size

| Artifact |Pull Request (bytes) | Latest Release (bytes) | Delta (bytes) | Delta (percentage) | | -------- | ------------------: | ---------------------: | ------------: | -----------------: | |sqs-jvm.jar|989,933|988,947|986|0.10%| |sqs-jvm.jar closure|8,823,246|8,822,260|986|0.01%|