fix: Add eagle model_type detection for automatic method setting

- Added check for model_type == "eagle" in SpeculativeConfig auto-detection
- This ensures speculators Eagle models are properly detected and method is set to "eagle"
- Fixes V1 engine compatibility check for speculators Eagle models

Signed-off-by: rtuli@redhat.com

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Rahul Tuli <rtuli@redhat.com>

Author: rahul-tuli

vllm/config.py

@@ -2770,6 +2770,8 @@ def __post_init__(self):
                 elif "eagle-" in self.draft_model_config.model.lower() or \
                         "eagle3-" in self.draft_model_config.model.lower():
                     self.method = "eagle"
+                elif self.draft_model_config.hf_config.model_type == "eagle":
+                    self.method = "eagle"
                 elif self.draft_model_config.hf_config.model_type == "medusa":
                     self.method = "medusa"
                 elif (self.draft_model_config.hf_config.model_type ==