Private realm cannot be re-uploaded on staging

[vikbez]

Private realm cannot be re-uploaded on staging

Description

I tried the private = true feature to allow for private realm reuploading but it did not work on staging:
error was Data: package already exists

Your environment

go version go1.25.3 linux/amd64
gno version: master.2737+5d49b19da

Steps to reproduce

gnomod.toml

module = "gno.land/r/vik000/test35"
gno = "0.9"
private = true

test.gno

package test35

func Render(path string) string {
	return "test35 foo"
}

push the package -> OK
edit test.gno:

package test35

func Render(path string) string {
	return "test35 bar"
}

push the package -> Data: package already exists

[vikbez]

PR #4877