fix(math): NewUintFromBigInt argument mutation (backport #18214)

[mergify]

This is an automatic backport of pull request #18214 done by Mergify.
Cherry-pick of bbf2faa has failed:

On branch mergify/bp/release/v0.47.x/pr-18214
Your branch is up to date with 'origin/release/v0.47.x'.

You are currently cherry-picking commit bbf2faa69.
  (fix conflicts and run "git cherry-pick --continue")
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Changes to be committed:
	modified:   math/uint.go
	modified:   math/uint_test.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   math/CHANGELOG.md

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[julienrbrt]

It does not need to be backported. We tag math from main.