generatr-blueprint creates *.js files instead of *.mjs

[dwarakaprasad]

Overview of the issue

Generating a new blueprint using jhipster generate-blueprint creates files <root-folder>/generators/generator.js instead of *.mjs files.

Motivation for or Use Case

Reproduce the error

Related issues

#25276 added this logic which only enables if local blueprint is selected.

Is this by design.

Suggest a Fix

JHipster Version(s)

JHipster configuration

Entity configuration(s) entityName.json files generated in the .jhipster directory

Browsers and Operating System

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