Fix Redis Lettuce passwordless auto-config bean collision

[Copilot]

Redis passwordless auto-configuration was gating the Azure LettuceClientConfigurationBuilderCustomizer by type, so any user-defined customizer could suppress the Azure one entirely. That dropped the Azure Redis credentials provider and RESP2 configuration, breaking passwordless auth in a way that was hard to diagnose.

• Auto-configuration

  • Narrow the missing-bean condition from type-based to name-based for azureLettuceClientConfigurationBuilderCustomizer.
  • Preserve the Azure Lettuce customizer even when applications register their own LettuceClientConfigurationBuilderCustomizer for unrelated concerns.

• Regression coverage

  • Add a unit test that registers a user customizer and verifies both customizers coexist in the application context.

• Documentation

  • Add a Spring changelog entry describing the Redis Lettuce passwordless auto-configuration fix.

Example of the behavioral change:

@Bean(name = "azureLettuceClientConfigurationBuilderCustomizer")
@ConditionalOnMissingBean(name = "azureLettuceClientConfigurationBuilderCustomizer")
LettuceClientConfigurationBuilderCustomizer azureLettuceClientConfigurationBuilderCustomizer(
    AzureRedisCredentials azureRedisCredentials) {
    // configures Azure Redis credentials provider + RESP2
}

With this change, a user bean such as:

@Bean
LettuceClientConfigurationBuilderCustomizer userCustomizer() {
    return builder -> { /* pool / timeout tuning */ };
}

no longer suppresses the Azure passwordless customizer.

[Copilot]

Pull request overview

This PR fixes Redis Lettuce passwordless Spring auto-configuration so the Azure Lettuce customizer is not skipped when applications define their own LettuceClientConfigurationBuilderCustomizer.

Changes:

• Changes the Azure Lettuce customizer condition from type-based to bean-name-based.
• Adds regression coverage verifying user and Azure Lettuce customizers coexist.
• Adds a changelog entry for the Redis passwordless auto-configuration fix.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
sdk/spring/spring-cloud-azure-autoconfigure/src/main/java/com/azure/spring/cloud/autoconfigure/implementation/data/redis/AzureLettucePasswordlessAutoConfiguration.java	Narrows the missing-bean condition to the Azure customizer bean name.
sdk/spring/spring-cloud-azure-autoconfigure/src/test/java/com/azure/spring/cloud/autoconfigure/implementation/data/redis/AzureLettucePasswordlessAutoConfigurationTest.java	Adds a regression test for coexistence with a user-defined Lettuce customizer.
sdk/spring/CHANGELOG.md	Documents the Redis Lettuce passwordless auto-configuration bug fix.

[rujche]

/azp run java - spring - tests

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Azure Pipelines successfully started running 1 pipeline(s).

[rujche]

/azp run java - spring - tests

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

[rujche]

/azp run java - spring - tests

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

[Netyyyy]

LGTM.