improvement(custom-blocks): hardened delete with usage count + per-input required option (#5575)

* improvement(custom-blocks): usage visibility + type-to-confirm delete

* feat(custom-blocks): per-input required option

* improvement(custom-blocks): replace usage tab with delete-confirmation usage count

* fix(custom-blocks): escape LIKE wildcards in usage scan + fresh count on delete modal

* fix(custom-blocks): explicit ESCAPE clause on usage-scan LIKE prefilter

scripts/check-api-validation-contracts.ts

@@ -9,8 +9,8 @@ const QUERY_HOOKS_DIR = path.join(ROOT, 'apps/sim/hooks/queries')
 const SELECTOR_HOOKS_DIR = path.join(ROOT, 'apps/sim/hooks/selectors')
 
 const BASELINE = {
-  totalRoutes: 926,
-  zodRoutes: 926,
+  totalRoutes: 927,
+  zodRoutes: 927,
   nonZodRoutes: 0,
 } as const