fix(feishu): disable block streaming to prevent silent reply drops (openclaw#38422)

Verified:
- pnpm build
- pnpm check
- pnpm test:macmini

Co-authored-by: xinhuagu <562450+xinhuagu@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

CHANGELOG.md

@@ -223,6 +223,7 @@ Docs: https://docs.openclaw.ai
 - Models/tool probing: raise the tool-capability probe budget from 32 to 256 tokens so reasoning models that spend tokens on thinking before returning a required tool call are less likely to be misclassified as not supporting tools. (#7521) Thanks @jakobdylanc.
 - Gateway/transient network classification: treat wrapped `...: fetch failed` transport messages as transient while avoiding broad matches like `Web fetch failed (404): ...`, preventing Discord reconnect wrappers from crashing the gateway without suppressing non-network tool failures. (#38530) Thanks @xinhuagu.
 - ACP/console silent reply suppression: filter ACP `NO_REPLY` lead fragments and silent-only finals before `openclaw agent` logging/delivery so console-backed ACP sessions no longer leak `NO`/`NO_REPLY` placeholders. (#38436) Thanks @ql-wade.
+- Feishu/reply delivery reliability: disable block streaming in Feishu reply options so plain-text auto-render replies are no longer silently dropped before final delivery. (#38258) Thanks @xinhuagu.
 
 ## 2026.3.2