Fixes for python, especially nanobind

[jmalkin]

Two changes here:

• In KLL, check that src and dst are not equal before calling std::move in a few more places
• In EBPPS, the bincond confused the compiler for certain complex types

Neither change should impact the API and they should both improve compatibility more generally, not just for our python repo.

[coveralls]

Pull Request Test Coverage Report for Build 7074002828

• 4 of 4 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 98.938%

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Totals
Change from base Build 7025984769:	0.0%
Covered Lines:	16021
Relevant Lines:	16193

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💛 - Coveralls