[WC-xxxx] chore: Remove LAST Custom Widget (#2316)

Author: samuelreichert

.github/copilot-instructions.md

@@ -7,7 +7,6 @@ Use this guide to review both code and workflow. Focus on Mendix pluggable widge
 - **Monorepo** with packages under `packages/`:
     - `packages/pluggableWidgets/*-web`
     - `packages/modules/*`
-    - `packages/customWidgets/*`
     - `packages/shared/*` (configs, plugins)
 - **Stack**: TypeScript, React, SCSS, Rollup via `@mendix/pluggable-widgets-tools`, Jest/RTL, ESLint/Prettier.
 - **Commands** (root): `pnpm lint`, `pnpm test`, `pnpm build`, `pnpm -w changelog`, `pnpm -w version`.

.github/renovate.json

@@ -27,7 +27,6 @@
     "allowScripts": true,
     "ignoreScripts": false,
     "ignoreDeps": ["typescript", "react", "react-dom", "@types/react", "@types/react-dom"],
-    "ignorePaths": ["**/customWidgets/**"],
     "packageRules": [
         { "matchCategories": ["docker"], "enabled": false },
         { "matchPackagePatterns": ["*"], "rangeStrategy": "bump" },

automation/scripts/update-screenshots.mjs

@@ -294,7 +294,7 @@ function extractZip(zipPath, destDir) {
  *   C) Stripped:      pluggableWidgets/gallery-web/test-results/...  (v4 artifact strips packages/)
  *   D) Via node_modules: .../node_modules/@mendix/gallery-web/test-results/...
  */
-const CATEGORY_DIRS = new Set(["pluggableWidgets", "modules", "customWidgets", "shared"]);
+const CATEGORY_DIRS = new Set(["pluggableWidgets", "modules", "shared"]);
 
 function extractCandidatePackageDirs(parts, testResultsIdx, repoRoot) {
     const candidates = [];

package.json

@@ -80,7 +80,6 @@
             "mime-types@2.1.35": "patches/mime-types@2.1.35.patch",
             "mobx-react-lite@4.0.7": "patches/mobx-react-lite@4.0.7.patch",
             "mobx@6.12.3": "patches/mobx@6.12.3.patch",
-            "react-big-calendar@0.19.2": "patches/react-big-calendar@0.19.2.patch",
             "react-dropzone": "patches/react-dropzone.patch"
         },
         "ignoredBuiltDependencies": [