Add Unit Tests to Improve Coverage for Selective Role Sharing Feature

[HasiniSama]

Description

PR: wso2-extensions/identity-organization-management#525

Please select the area issue is related to

B2B

Version

7.2.0

Developer Checklist

• [Behavioural Change] Does this change introduce a behavioral change to the product?
•  ↳ Approved by team lead
•  ↳ Label impact/behavioral-change added
• [Migration Impact] Does this change have a migration impact?
•  ↳ Migration label added (e.g., 7.2.0-migration)
•  ↳ Migration issues created and linked
• [New Configuration] Does this change introduce a new configuration?
•  ↳ Label config added
•  ↳ Configuration is properly documented

[HasiniSama]

PRs:

• Add DB-specific SQL tail generation for shared app filtering with limit wso2-extensions/identity-organization-management#534
• Change log level from error to debug for missing shared application case wso2-extensions/identity-organization-management#541