fix: resolve CRM example compile failure caused by Zod double-parse on form.sections.columns

The `defineStack()` in @objectstack/spec transforms `columns: '2'` (string)
to `columns: 2` (number) via ZodPipe. When `objectstack compile` CLI then
runs safeParse again on the already-transformed data, the number `2` fails
the string enum validation expecting "1"|"2"|"3"|"4".

Fix: pass `{ strict: false }` to `defineStack()` in the CRM example config,
deferring validation to the compile CLI's single safeParse pass.

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

examples/crm/objectstack.config.ts

@@ -767,4 +767,4 @@ export default defineStack({
 
   },
   plugins: [],
-});
+}, { strict: false }); // Defer validation to `objectstack compile` CLI to avoid Zod double-parse transform bug on form.sections.columns