Tests fail on i386 (really i686): ailure: qres.gampoi can handle other weird values (@test-residuals.R#112) `a` is not strictly more than `b`. Difference: 0

Hello,

While packaging glmgampoi for Debian we noticed that the tests fail on 32bit x86

```
BEGIN TEST testthat.R

R version 4.0.3 (2020-10-10) -- "Bunny-Wunnies Freak Out"
Copyright (C) 2020 The R Foundation for Statistical Computing
Platform: i686-pc-linux-gnu (32-bit)

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> library(testthat)
> library(glmGamPoi)
>
> test_check("glmGamPoi")
── 1. Failure: qres.gampoi can handle other weird values (@test-residuals.R#112)
`a` is not strictly more than `b`. Difference: 0

══ testthat results ═══════════════════════════════════════════════════════════
Error: testthat unit tests failed
[ OK: 262 | SKIPPED: 3 | WARNINGS: 20 | FAILED: 1 ]
1. Failure: qres.gampoi can handle other weird values (@test-residuals.R#112)

Execution halted
```

https://ci.debian.net/data/autopkgtest/testing/i386/r/r-bioc-glmgampoi/9733914/log.gz

Start with test-residuals.R at the qres.gampoi test around line 112 and reproduce the failure on a 32-bit i386/i686 R environment. Compare the failing assertion and relevant numerical values with a working platform, using the Debian autopkgtest log as the initial reference. Done means the test passes on 32-bit x86 without weakening the assertion unnecessarily.

Written by the indexing model from the issue text.