revert: per-model disableTimeout implementation; remove flag from gpt-5-pro model entry (server-side timeouts). Prep for background mode approach.

Author: hannesrudolph

packages/types/src/providers/openai.ts

@@ -50,7 +50,6 @@ export const openAiNativeModels = {
 			"GPT-5 Pro: a slow, reasoning-focused model built to tackle tough problems. Requests can take several minutes to finish. Responses API only; no streaming, so it may appear stuck until the reply is ready.",
 		supportsVerbosity: true,
 		supportsTemperature: false,
-		disableTimeout: true,
 	},
 	"gpt-5-mini-2025-08-07": {
 		maxTokens: 128000,