fix(ls): point to parent of ref target in definition service (#5042)

Author: glowcloud

packages/apidom-ls/src/services/definition/definition-service.ts

@@ -133,7 +133,7 @@ export class DefaultDefinitionService implements DefinitionService {
       }
       // TODO (francesco.tumanischvili@smartbear.com): replace with fragment deref
       const refTarget = jsonPointerEvaluate<Element>(api, URIFragmentIdentifier.from(ref));
-      const nodeSourceMap = getSourceMap(refTarget);
+      const nodeSourceMap = getSourceMap(refTarget?.parent ?? refTarget);
       const range = Range.create(
         textDocument.positionAt(nodeSourceMap.offset),
         textDocument.positionAt(nodeSourceMap.endOffset || nodeSourceMap.offset + 1),

packages/apidom-ls/test/openapi-json.ts

@@ -428,7 +428,7 @@ const defTestInput = [
           line: 54,
         },
         start: {
-          character: 13,
+          character: 6,
           line: 52,
         },
       },