fix(create-element): add prepack script to build before publish (#3099)

Closes #2967

Assisted-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bennypowers

.changeset/fix-create-element.md

@@ -0,0 +1,5 @@
+---
+"@patternfly/create-element": patch
+---
+
+Fixed missing entry point in published package.

tools/create-element/package.json

@@ -34,6 +34,7 @@
     "templates/**/*"
   ],
   "scripts": {
+    "prepack": "tsc -b .",
     "test": "echo 'unit tests for PFE generator not written yet'"
   },
   "bugs": {