fix: data source definition overriding

[dph5199278]

修复由 #5671 导致无法设置其他默认数据源：

1. 在多数据源或动态数据源下，无法设置其他数据源为默认dataSource

如下：

The bean 'dataSource', defined in class path resource [com/alibaba/druid/spring/boot3/autoconfigure/DruidDataSourceAutoConfigure.class], could not be registered. A bean with that name has already been defined in class path resource [....class] and overriding is disabled.
Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

如果开启spring.main.allow-bean-definition-overriding=true，会导致dataSource被DruidDataSourceAutoConfigure覆盖出现问题。

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[lizongbo]

没懂什么场景下需要这样操作，既然不想重复bean，不应该是把druid的starter依赖去掉么？
能详细描述下是什么样的配置在什么情况下触发问题么？

[dph5199278]

有两个方面：

1. 源码自身就有@ConditionalOnMissingBean，说明设计本身就是为了可替代性的
2. 除了dataSource，其余都由autoconfig来创建，不用另行再做创建（即：只有dataSource本身，其余像WallFilter等还是交由starter统一配置）

[dph5199278]

能详细描述下是什么样的配置在什么情况下触发问题么？

如：

@Configuration
public class DataSourceConfig {
    @Bean
    @Primary
    public DataSource dataSource() {
        DynamicDataSource dynamicDataSource = new DynamicDataSource();
        dynamicDataSource.setTargetDataSources(new HashMap<>());
        return dynamicDataSource;
    }
}

如上，我需要一个动态源来切换具体的使用源，而TargetDataSources使用的就是value为druid的数据源，这样就会触发上面的问题，并且这个在1.2.21版本上是不会有问题的，DynamicDataSource是我这边自定义的动态数据源，除了这个，starter的其他配置都是统一全局的

[lizongbo]

ci构建失败， 请本地运行 mvn clean install验证ok

[dph5199278]

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] druid-parent 1.2.23-SNAPSHOT ....................... SUCCESS [  1.213 s]
[INFO] druid 1.2.23-SNAPSHOT .............................. SUCCESS [03:11 min]
[INFO] druid-spring-boot-starter 1.2.23-SNAPSHOT .......... SUCCESS [ 25.349 s]
[INFO] druid-wrapper 1.2.23-SNAPSHOT ...................... SUCCESS [  0.214 s]
[INFO] druid-demo-petclinic 2.7.18 ........................ SUCCESS [ 22.051 s]
[INFO] druid-spring-boot-3-starter 1.2.23-SNAPSHOT ........ SUCCESS [ 20.881 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  04:21 min
[INFO] Finished at: 2024-03-27T19:43:46+08:00
[INFO] ------------------------------------------------------------------------

已和本地一致，本地可以编译

[yuanyp]

我这边发现从1.2.14升级到1.2.22发现一个问题，配置的最小连接数，初始化个数，最大连接数等都不生效，变成默认的了。升级到1.2.23又正常了。
spring.datasource.initial-size
spring.datasource.min-ide

配置类
@bean
@primary
@ConfigurationProperties(prefix="spring.datasource“)
public DataSource primaryDataSource(){
return DruidDataSourceBuilder.create().build();
}