[Python][UHI] Incorrect number of entries reported in TH1 after slicing

[siliataider]

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Description

When setting bin contents of a histogram using ROOT's UHI, the number of entries (TH1::GetEntries()) is calculated incorrectly.

Reproducer

import ROOT

h = ROOT.TH1D("h", "h", 10, 0, 1)
h[...] = 1.
h.Print()

Expected

TH1.Print Name  = h, Entries= 10, Total sum= 10

Got

TH1.Print Name  = h, Entries= 20, Total sum= 10

ROOT version

6.36

Installation method

al

Operating system

al

Additional context

No response