Multiple Versions page shows incorrect 'npm-registry dedupe' command

[MichielTondeur]

Describe the bug

The Multiple Versions page shows an alert informing the user of a dedupe command they could run.

However, when generating a report for a package via the browser, the package manager is not known ahead of time.

This causes the command to reference npm-registry dedupe, where npm-registry is an internal value instead of an actual runnable command.

Should this message be shown when we don't know the package manager of the user?

Reproduction

https://node-modules.dev/report/multiple-versions#install=eslint

System Info

Browsers:
    Chrome: 152.0.7977.75
    Firefox: 156.0.1
    Firefox Developer Edition: 156.0.1

Used Package Manager

npm

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Contributions

• I am willing to submit a PR to fix this issue
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