chore: add source_ir in slice layer name

[jiwoong-choi]

Description

Minor change for giving correct names for slice layers.

[Example]

• Before: [SLICE]-[unknown_ir_ops.slice.Tensor]-[slice_tensor]
• After: [SLICE]-[aten_ops.slice.Tensor]-[slice_tensor]

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project (You can use the linters)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas and hacks
• I have made corresponding changes to the documentation
• I have added tests to verify my fix or my feature
• New and existing unit tests pass locally with my changes
• I have added the relevant labels to my PR in so that relevant reviewers are notified

[narendasan]

LGTM