DEV: Update core lint commands to only affect bundled plugins (#29824)

Non-bundled plugins have their own linting configs/commands, and should not be linted by these package.json commands

script/list_bundled_plugins

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# This script lists all bundled plugins in the Discourse project.
+# It accepts an optional suffix argument that will be appended to each plugin name.
+#
+# Usage:
+#   ./list_bundled_plugins [suffix]
+#
+# Arguments:
+#   suffix: An optional string to append to each plugin name.
+#
+
+set -e -u -o pipefail
+
+suffix=${1:-}
+git ls-tree --name-only -d HEAD plugins/* | sed "s|$|$suffix|"