fix(QTDI-2954): fix possible NPE in VaultClient

[undx]

https://qlik-dev.atlassian.net/browse/QTDI-2954

Requirements

• Any code change adding any logic MUST be tested through a unit test executed with the default build
• Any API addition MUST be done with a documentation update if relevant

Why this PR is needed?

What does this PR adds (design/code thoughts)?

AI generated code

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• this PR has been written with the help of GitHub Copilot or another generative AI tool

[Copilot]

Pull request overview

This PR addresses a possible null response handling issue in VaultClient.throwError(Throwable) by preserving the configured fallback status when a WebApplicationException has no Response.

Changes:

• Moves response.getStatus() inside the existing null check in throwError(Throwable).
• Adds a unit test that invokes throwError(Throwable) with a WebApplicationException whose response is null.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
vault-client/src/main/java/org/talend/sdk/components/vault/client/VaultClient.java	Makes throwError(Throwable) avoid dereferencing a null JAX-RS response.
vault-client/src/test/java/org/talend/sdk/components/vault/client/VaultClientTest.java	Adds regression coverage for null response handling in throwError(Throwable).

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

[sonar-rnd]

Quality Gate failed

• 0.00% Coverage on New Code (is less than 80.00%)
• 4 New Issues (is greater than 0)

Project ID: org.talend.sdk.component:component-runtime

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