poe: reduce omits in gpt-5.5 extends configs

Inherit family, knowledge, and structured_output from base models
instead of omitting them. Only omit fields that genuinely don't
apply to Poe (provider-specific pricing tiers, different context
limits, opencode-specific provider config).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: fhennerkes

providers/poe/models/openai/gpt-5.5-pro.toml

@@ -5,9 +5,6 @@ last_updated = "2026-04-08"
 [extends]
 from = "opencode/gpt-5.5-pro"
 omit = [
-  "family",
-  "knowledge",
-  "structured_output",
   "cost.cache_read",
   "limit.input",
   "provider",

providers/poe/models/openai/gpt-5.5.toml

@@ -4,9 +4,6 @@ last_updated = "2026-04-08"
 [extends]
 from = "openai/gpt-5.5"
 omit = [
-  "family",
-  "knowledge",
-  "structured_output",
   "cost.context_over_200k",
   "limit.input",
   "experimental",