契约绑定生成脚本改用能命中的过滤器

- package.json：contracts:model3d:generate 的过滤器由 `model3d editor_canvas` 改为工作区文档写明的 `export_bindings`；ts-rs 生成的用例名是 `export_bindings_<类型名小写>`，`editor_canvas` 带下划线永远匹配不到 editor-canvas 两个绑定，此前脚本实际只重生成 model3d 一侧

package.json

@@ -44,7 +44,7 @@
     "admin-web:typecheck": "node scripts/admin-web-build.mjs typecheck",
     "admin-web:preview": "npm --prefix apps/admin-web run preview --",
     "spacetime:generate": "node scripts/generate-spacetime-bindings.mjs",
-    "contracts:model3d:generate": "cargo test --locked -p shared-contracts --manifest-path server-rs/Cargo.toml -- model3d editor_canvas && prettier --write packages/shared/src/contracts/model3d packages/shared/src/contracts/editor-canvas",
+    "contracts:model3d:generate": "cargo test --locked -p shared-contracts --manifest-path server-rs/Cargo.toml -- export_bindings && prettier --write packages/shared/src/contracts/model3d packages/shared/src/contracts/editor-canvas",
     "spacetime:external-generation:maintain": "node scripts/spacetime-maintain-external-generation-jobs.mjs",
     "spacetime:editor-image-asset-kind:clean": "node scripts/spacetime-clean-editor-image-asset-kind.mjs",
     "spacetime:editor-canvas-layout:migrate": "node scripts/spacetime-migrate-editor-canvas-layout.mjs",