fix(providers): expose temperature capability on claude-sonnet-5

Sonnet 5 accepts the temperature parameter (0-1, per Anthropic API docs), and it replaces claude-sonnet-4-6 as the default/recommended Anthropic model. Omitting the capability silently dropped temperature control for workflows on the default model. The request builder already strips temperature whenever thinking is active, so this only takes effect when thinking is disabled — where temperature is valid.

Author: waleedlatif1

apps/sim/providers/models.ts

@@ -678,6 +678,7 @@ export const PROVIDER_DEFINITIONS: Record<string, ProviderDefinition> = {
           updatedAt: '2026-06-30',
         },
         capabilities: {
+          temperature: { min: 0, max: 1 },
           nativeStructuredOutputs: true,
           maxOutputTokens: 128000,
           thinking: {