OperateClientProdAutoConfiguration is defined incorrectly

[chillleader]

OperateClientProdAutoConfiguration is defined using @ImportAutoConfiguration (instead of META-INF).
This is discouraged by the documentation:

Generally, @EnableAutoConfiguration should be used in preference to this annotation, however, @ImportAutoConfiguration can be useful in some situations and especially when writing tests.

We should define it using META-INF to avoid problems.

Context

I was trying to manually disable OperateClientProdAutoConfiguration and got the following error:

The following classes could not be excluded because they are not auto-configuration classes:\r\n\t- io.camunda.zeebe.spring.client.configuration.OperateClientProdAutoConfiguration

I tend to think that this happens because this auto-configuration is not defined properly (using META-INF), so Spring doesn't detect it as auto-configuration.