Introduce the ability to quickly locate models with conflicting billing configurations.
Key points
• Added `hasConflict` flag to detect models that define both a fixed price (`ModelPrice`) and any ratio (`ModelRatio` or `CompletionRatio`).
• Added “Show Only Conflict Rates” `Checkbox` to toolbar; filtering logic now supports keyword + conflict filtering.
• Display a red `Tag` beside the model name when a conflict is detected for immediate visual feedback.
• Kept `hasConflict` state in sync during add, update and delete operations.
• Imported `Checkbox` and `Tag` from **@douyinfe/semi-ui**.
• Minor UI tweaks (circle tag style, margin) for consistency.
This enhancement helps administrators swiftly identify and resolve incompatible pricing rules, addressing the need discussed in issue #1286.
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