refactor!: ahp granting

[TiBarification]

Description

Describe the changes

What is the current behavior? function does not return instance of class

What is the new behavior? now returns

Does this PR introduce a breaking change? no

Other information:
Why we have this method without actually getting instance. For example I need to remove particular Ahp process in a future, now I have a reference of it.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentations

Submission checklist

• I have checked the project can be compiled
• I have tested my changes and it worked as expected

Patches (if there are any changes related to Harmony patches)

• I have checked no IL patching errors in the console

Other

• Still requires more testing

[TiBarification]

disagree with tag "breaking changes". What breaking? You can keep using it like "void" function if not needed result.

[louis1706]

Modifying return type does breaking change
plugin build with a previous version will return an error if we do merge this