[BUG] defaultToEmptyContainer not working with Maven plugin #21505

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
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Description

#21269 introduces a new global additionalProperty: defaultToEmptyContainer

Unfortunately it only works when using additionalProperties.
It does not work with configOptions in maven. The plugin requires cliOptions. See

openapi-generator version

7.14.0

Steps to reproduce

Configure maven

<configOptions>
        <defaultToEmptyContainer>array|undefined</defaultToEmptyContainer>
</configOptions>

Related issues/PRs

#21269

Suggest a fix

Add cliOptions to the supported generators (maybe all by default?)

cliOptions.add(CliOption.newString(DEFAULT_TO_EMPTY_CONTAINER, "description..."));

Update CodeGenMojo to put all configOptions to additionalProperties:

    if (configOptions != null) {
        for (Map.Entry<?, ?> configOptionsEntry : configOptions.entrySet()) {
            input.getConfig().additionalProperties().put(configOptionsEntry.getKey().toString(), configOptionsEntry.getValue());
        }
    }