[BUG] Spring Cloud Azure keyvault secrets does not use configured connect-timeouts

[mrclmh]

Describe the bug
When using spring.cloud.azure.keyvault.secret a connect-timeout can be confgured in three variants:

1. spring.cloud.azure.client.http.connect-timeout (configuration-properties-global)
2. spring.cloud.azure.keyvault.client.connect-timeout (configuration-properties-azure-key-vault)
3. spring.cloud.azure.keyvault.secret.client.connect-timeout (configuration-properties-azure-key-vault-secrets)

When using a configuration which triggers an io.netty.channel.ConnectTimeoutException the timeout for this is only correctly set when using variant 3. When using variant 1 or 2, the timeout stays at the default 10 seconds.

Exception or Stack Trace
log_global.txt

To Reproduce

1. Configure usage of Azure keyvault secrets
2. Configure the connect-timeout with variant 1 or 2 (see above).
3. Introduce an error in the config (like URI to nonexistent key vault).

Expected behavior
The configured timeout should be used when it is configured globally (variant 1) or for Azure keyvault (variant 2).

Setup (please complete the following information):

• OS: MacOs 14.7.1
• Library/Libraries: com.azure.spring:spring-cloud-azure-starter-keyvault-secrets:4.90 via com.azure.spring:spring-cloud-azure-dependencies:5.18.0
• Java version: 23
• Frameworks: Spring Boot

If you suspect a dependency version mismatch (e.g. you see NoClassDefFoundError, NoSuchMethodError or similar), please check out Troubleshoot dependency version conflict article first. If it doesn't provide solution for the problem, please provide:

• verbose dependency tree (mvn dependency:tree -Dverbose)
• exception message, full stack trace, and any available logs

Additional context
#31051 seems to be similar

Information Checklist
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[github-actions]

@moarychan @Netyyyy @rujche @saragluna

[github-actions]

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