[quant][graphmode][fx] Separate handling Copy operator to a helper function (#54644) (#55429)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/55429
Previously we special case copy operator in normal insert observer code, this PR tries to split the
special case logic to a separate function and keep the rest of the code clean.
Test Plan:
Imported from OSS
Imported from OSS
Reviewed By: vkuzo
Differential Revision: D27609972
fbshipit-source-id: 378f6aa70f18c0b477b62b6efe236648748aae7e
