[API] Add improved slot locator functions (#716)

- Returns object with slot, index, and pos
- Locate-by-type returns object with slot & index
- Uses standard `undefined` return for concise chaining & validation
- Free 10x perf increase over getConnectionPos (used basic random data
to test, out of curiosity)

src/LGraphCanvas.ts

@@ -3109,16 +3109,6 @@ export class LGraphCanvas implements ConnectionColorContext {
     return
   }
 
-  /** @deprecated - use {@link isOverNodeInput} from '@/canvas/measureSlots.ts' */
-  isOverNodeInput(node: LGraphNode, canvasx: number, canvasy: number, slot_pos?: Point): number {
-    return isOverNodeInput(node, canvasx, canvasy, slot_pos)
-  }
-
-  /** @deprecated - use {@link isOverNodeOutput} from '@/canvas/measureSlots.ts' */
-  isOverNodeOutput(node: LGraphNode, canvasx: number, canvasy: number, slot_pos?: Point): number {
-    return isOverNodeOutput(node, canvasx, canvasy, slot_pos)
-  }
-
   /**
    * process a key event
    */