fix: linting error in hand_off_to_user

[mehtarac]

Description

Fix linting error in the tool handoff_to_user:

src/strands_tools/handoff_to_user.py:182:121: E501 Line too long (135 > 120)
tests/test_handoff_to_user.py:66:121: E501 Line too long (148 > 120)

Related Issues

Documentation PR

Type of Change

Bug fix
New Tool
Breaking change
Documentation update
Other (please describe):

Testing

How have you tested the change? Verify that the changes do not break functionality or introduce warnings in consuming repositories: agents-docs, agents-tools, agents-cli

• I ran hatch run prepare

Checklist

• I have read the CONTRIBUTING document
• I have added any necessary tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly
• I have added an appropriate example to the documentation to outline the feature
• My changes generate no new warnings
• Any dependent changes have been merged and published

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