docs(issue-template): ask for package manager and version

Package manager and install mode — especially Yarn Plug'n'Play vs a
node_modules linker — frequently determine module-resolution behavior,
but the bug template only collected commitlint/git/node versions. Add a
required free-text field so reporters state their package manager and
version (and, ideally, the install mode).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: escapedcat

.github/ISSUE_TEMPLATE/BUG_REPORT.yml

@@ -79,3 +79,11 @@ body:
       placeholder: vx.x.x
     validations:
       required: true
+  - type: input
+    id: package-manager
+    attributes:
+      label: "Package manager & version"
+      description: Include the install mode too — resolution differs a lot, especially Yarn Plug'n'Play (no node_modules)
+      placeholder: "e.g. yarn 4.17.0 (Plug'n'Play), pnpm 9.15.0, npm 10.8.0"
+    validations:
+      required: true