chore: setup mise, pkg-pr-new, OIDC for publication

[GauBen]

Description

In an effort to unify setup across 6 JS repos:

• mise manages yarn and node locally
• chachalog config
• normalize gitignores, remove npm leftovers
• mise in ci and pinned actions
• update jahia-modules-action
• pkg-pr-new, normalized npm publication
• yarn 4.18 in tests

Checklist

Source code

• I've shared and documented any breaking change
• I've reviewed and updated the jahia-depends

Tests

• I've provided Unit and/or Integration Tests
• I've updated the parent issue with required manual validations

Tip

Documentation to guide the reviews: How to do a code review

[github-actions]

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[Copilot]

Pull request overview

This PR standardizes the JavaScript toolchain and publication workflow for the monorepo by moving Node/Yarn management to mise, aligning Yarn 4 usage, and modernizing CI publication (preview + npm with OIDC).

Changes:

• Switched Maven builds from frontend-maven-plugin to exec-maven-plugin to run yarn/node commands against the mise-managed toolchain.
• Added pkg-pr-new preview publishing workflow and introduced an npm publish job intended to use OIDC/provenance.
• Added .chachalog configuration and bumped/normalized Yarn 4.18 usage (notably in tests), along with gitignore/yarnrc adjustments.

Reviewed changes

Copilot reviewed 19 out of 24 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
yarn.lock	Adds new dev dependencies lock entries (@chachalog/types, pkg-pr-new).
package.json	Adds dev dependencies for chachalog typing and preview publishing tooling.
mise.toml	Pins Node/Yarn toolchain via mise.
pom.xml	Removes frontend-maven-plugin management and bumps/standardizes exec-maven-plugin usage.
javascript-modules-engine/pom.xml	Migrates Yarn execution to exec-maven-plugin; adjusts release-prepare behavior.
javascript-modules-library/pom.xml	Migrates Yarn execution to exec-maven-plugin; removes alpha publish steps.
javascript-create-module/pom.xml	Migrates Yarn execution to exec-maven-plugin; removes alpha publish steps.
vite-plugin/pom.xml	Migrates Yarn and version sync execution to exec-maven-plugin.
jahia-test-module/pom.xml	Migrates Yarn execution to exec-maven-plugin; version sync via node.
samples/hydrogen/pom.xml	Migrates Yarn execution to exec-maven-plugin; version sync via node.
.yarnrc.yml	Drops yarnPath and adds npmPreapprovedPackages configuration.
tests/.yarnrc.yml	Drops yarnPath and adds npmPreapprovedPackages configuration.
tests/package.json	Removes publish script; bumps test packageManager Yarn version to 4.18.0.
tests/yarn.lock	Updates lockfile format/version to match newer Yarn.
.gitignore	Broadly ignores .yarn/ contents while attempting to keep patches.
.github/workflows/skip-for-docs.yml	Removes docs-only skip workflow.
.github/workflows/pkg-pr-new.yml	Adds preview publishing workflow using pkg-pr-new.
.github/workflows/on-release.yml	Pins actions and adds npm publish job with id-token permission for OIDC/provenance.
.github/workflows/on-merge.yml	Pins checkout action; removes explicit npm token setup.
.github/workflows/on-code-change.yml	Pins checkout and replaces setup-node with mise for toolchain setup.
.chachalog/config.mjs	Adds chachalog configuration backed by .chachalog/.version.
.chachalog/.version	Adds initial version file for chachalog-managed versioning.