[GSS](7.4.z) WFCORE-6424 - Generic command argument value issue with List containing Object

Hello team,

When adding sasl authentication factory with below cli command,

~~~~

standalone@127.0.0.1

:9990 /] saslauthenticationfactory add --name=UnicreditLDAP-sasl-authentication --sasl-server-factory=UnicreditLDAP-sasl-factory --security-domain=UnicreditLDAP_SD --mechanism-configurations=[{mechanism-name=PLAIN,mechanism-realm-configurations=[\{realm-name=UnicreditLDAP_LR}]}]

~~~~

The result is below, where we can see <mechanism-realm realm-name="UnicreditLDAP_LR"/> is outside of <mechanism mechanism-name="PLAIN"/>

~~~~

<sasl-authentication-factory name="UnicreditLDAP-sasl-authentication" sasl-server-factory="UnicreditLDAP-sasl-factory" security-domain="UnicreditLDAP_SD">
<mechanism-configuration>
<mechanism mechanism-name="PLAIN"/>
<mechanism>
<mechanism-realm realm-name="UnicreditLDAP_LR"/>
</mechanism>
</mechanism-configuration>
</sasl-authentication-factory>

~~~~

But same is working find if this cli command is used,

/subsystem=elytron/sasl-authentication-factory=UnicreditLDAP-sasl-authentication:add(sasl-server-factory=UnicreditLDAP-sasl-factory,security-domain=UnicreditLDAP_SD,mechanism-configurations=[{mechanism-name=PLAIN,mechanism-realm-configurations=[\{realm-name=UnicreditLDAP_LR}]}])

Same is observed for http-authentication-factory.

I have reproduced this in My end.

Platform: RHEL 8, EAP 7.4.10, jdk17

Similar issue observed for another cli command while adding security domain.

It giving ERROR as WFLYCTL0155: 'realm' may not be null

~~~~

standalone@127.0.0.1

:9990 /] esecuritydomain add --name=UnicreditLDAP_SD --realms=\\{realm=UnicreditLDAP_LR,role-decoder=from-roles-attribute},\\{realm=local,role-mapper=super-user-mapper} --default-realm=UnicreditLDAP_LR --permission-mapper=default-permission-mapper

WFLYCTL0155: 'realm' may not be null
~~~~

But if we use the alternative CLI command it works,

~~~~

[standalone@127.0.0.1:9990 /] /subsystem=elytron/security-domain=UnicreditLDAP_SD:add(realms=\\{realm=UnicreditLDAP_LR,role-decoder=from-roles-attribute},\\{realm=local,role-mapper=super-user-mapper},default-realm=UnicreditLDAP_LR,permission-mapper=default-permission-mapper)
{"outcome" : "success"}

~~~~

Previously I have raised an EAPSUP.

Engineering team has confirmed this as a bug on CLI and asked me to raise a JBEAP, can you please check.