docs(notebooks): use `UnitaryOverlap` for compute-uncompute in `scaling-sampler`

[pedrorrivero]

Summary

Use Qiskit's UnitaryOverlap for building compute-uncompute circuits in scaling-estimator.

[coveralls]

Pull Request Test Coverage Report for Build 8695782705

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 8680717349:	0.0%
Covered Lines:	290
Relevant Lines:	290

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💛 - Coveralls