fix(testing): add envNumber to env mock factory

Author: waleedlatif1

packages/testing/src/mocks/env.mock.ts

@@ -53,6 +53,12 @@ export function createEnvMock(overrides: Record<string, string | undefined> = {}
       typeof value === 'string'
         ? value.toLowerCase() === 'false' || value === '0'
         : value === false,
+    envNumber: (value: number | string | undefined | null, fallback: number): number => {
+      if (typeof value === 'number' && Number.isFinite(value) && value > 0) return value
+      if (value === undefined || value === null || value === '') return fallback
+      const parsed = Number(value)
+      return Number.isFinite(parsed) && parsed > 0 ? parsed : fallback
+    },
   }
 }