Update dependency @react-leaflet/core to v3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@react-leaflet/core (source)	2.1.0 → 3.0.0

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Release Notes

PaulLeCam/react-leaflet (@​react-leaflet/core)

v3.0.0

Compare Source

v3 is a full rewrite of React Leaflet and contains breaking change from v2.

• Full rewrite based on React Hooks (no more extending Component)
• Replace Flow by TypeScript for type checking
• Drop IE support (Babel config will only target the "last 2 versions" of modern browsers)
• Switch to the Hippocratic License
• The Map component is replaced by MapContainer, behaving differently
• Event handlers must be attached using the eventHandlers prop rather than on* props, with a similar change for path options and WMS params
• The react-leaflet package only exposes a public API while a new package, @react-leaflet/core, is used to provide the core APIs
• A new documentation website using Docusaurus v2 with live examples

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⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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The artifact failure details are included below:

File name: package-lock.json

npm warn Unknown env config "store". This will error in a future major version of npm. See `npm help npmrc` for supported config options.
npm warn Unknown project config "strict-peer-dependencies". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
npm warn Unknown project config "auto-install-peers". This will stop working in the next major version of npm. See `npm help npmrc` for supported config options.
npm error code ERESOLVE
npm error ERESOLVE unable to resolve dependency tree
npm error
npm error While resolving: adhocracy4@1.0.0
npm error Found: react@18.3.1
npm error node_modules/react
npm error   react@"18.3.1" from the root project
npm error
npm error Could not resolve dependency:
npm error peer react@"^19.0.0" from @react-leaflet/core@3.0.0
npm error node_modules/@react-leaflet/core
npm error   dev @react-leaflet/core@"3.0.0" from the root project
npm error
npm error Fix the upstream dependency conflict, or retry this command with --force or --legacy-peer-deps to accept an incorrect (and potentially broken) dependency resolution.
npm error
npm error
npm error For a full report see:
npm error /runner/cache/others/npm/_logs/2026-09-24T23_55_37_356Z-eresolve-report.txt
npm error A complete log of this run can be found in: /runner/cache/others/npm/_logs/2026-09-24T23_55_37_356Z-debug-0.log