Error while retrieving list of v2 roles with corrupted audience information

[PasinduYeshan]

Describe the issue:
When attempting to retrieve a list of v2 roles, an error occurs when encountering roles with corrupted or invalid audience information. For example, in scenarios where an application was deleted without its associated roles being properly handled, the roles-related table may contain audience references associated with the deleted application.

 ERROR {org.wso2.carbon.tomcat.ext.valves.CompositeValve} - Could not handle request: /t/carbon.super/scim2/v2/Roles java.lang.NullPointerException
	at org.wso2.carbon.identity.application.mgt.listener.DefaultRoleManagementListener.getApplicationName(DefaultRoleManagementListener.java:534)
	at org.wso2.carbon.identity.application.mgt.listener.DefaultRoleManagementListener.postGetRoles(DefaultRoleManagementListener.java:117)
	at org.wso2.carbon.identity.role.v2.mgt.core.RoleManagementServiceImpl.getRoles(RoleManagementServiceImpl.java:152)
	at org.wso2.carbon.identity.scim2.common.impl.SCIMRoleManagerV2.listRoles(SCIMRoleManagerV2.java:499)
	at org.wso2.carbon.identity.scim2.common.impl.SCIMRoleManagerV2.listRolesWithGET(SCIMRoleManagerV2.java:299)
	at org.wso2.charon3.core.protocol.endpoints.RoleResourceV2Manager.listWithGETRole(RoleResourceV2Manager.java:175)
	at org.wso2.carbon.identity.scim2.provider.resources.RoleResourceV2.getRoles(RoleResourceV2.java:165)

How to reproduce:

Expected behavior:

• When retrieving roles, roles without an audience or roles with corrupted or null audience values should be skipped.

Environment information (Please complete the following information; remove any unnecessary fields) :

• Product Version: [e.g., IS 5.10.0, IS 5.9.0]
• OS: [e.g., Windows, Linux, Mac]
• Database: [e.g., MySQL, H2]
• Userstore: [e.g., LDAP, JDBC]

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