feat: Decouple Max Output Tokens from Max Thinking Tokens controls

- Replace modelInfo.thinking with supportsReasoningBudget properties
- Update all tests to use new model property structure
- Lower MIN_OUTPUT_TOKENS to 2048 for better usability
- Add standalone MaxOutputTokensControl component

Author: cannuri

.changeset/fix-max-tokens-slider.md

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+"roo-cline": patch
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+Fix: Decouple Max Output Tokens from Max Thinking Tokens controls
+
+- Separated Max Output Tokens control into its own component that displays for all models with configurable maxTokens
+- Updated ThinkingBudget component to only handle thinking/reasoning tokens
+- Fixed issue where non-thinking models with configurable maxTokens didn't show the output tokens slider
+- Updated to use new model properties (supportsReasoningBudget) from latest main branch