test store polluted by native object

[ltzmaxwell]

this happens when testing this file.
it imports gno.land/p/demo/testutils, and then import std, cause an error(pre-configured manually) on math/overflow package which is not imported and used.

package main

import (
	"gno.land/p/demo/testutils"
)

func main() {
	println(testutils.TestVar1)
}

// Output:
// 123

[ltzmaxwell]

the cause for this is when conducting test with native_libs, stdlibs are loaded as well. this. The test store is kinda polluted that std libs will reference the corresponding native object which was injected priorly to the test store . in some edge cases, cause a type mismatch.