Fix: Handle unrecognized child type in VisitPrimary and remove no-op boolean expressions

pkg/querybuilder/where_clause_visitor.go

@@ -330,6 +330,9 @@ func (v *filterExpressionVisitor) VisitPrimary(ctx *grammar.PrimaryContext) any
 				v.errors = append(v.errors, fmt.Sprintf("unsupported value type: %s", valCtx.GetText()))
 				return ""
 			}
+		} else {
+			// Child is neither KeyContext nor ValueContext, return empty condition
+			return ""
 		}
 		cond, err := v.conditionBuilder.ConditionFor(context.Background(), v.fullTextColumn, qbtypes.FilterOperatorRegexp, FormatFullTextSearch(searchText), v.builder, v.startNs, v.endNs)
 		if err != nil {

pkg/telemetrylogs/condition_builder.go

@@ -259,15 +259,14 @@ func (c *conditionBuilder) ConditionFor(
 		// immidiately return
 		return condition, nil
 	case telemetrytypes.FieldContextResource, telemetrytypes.FieldContextAttribute:
-		buildExistCondition = buildExistCondition && true
+		// pass; buildExistCondition already has the correct value
 	case telemetrytypes.FieldContextBody:
 		// Querying JSON fields already account for Nullability of fields
 		// so additional exists checks are not needed
 		if querybuilder.BodyJSONQueryEnabled {
 			return condition, nil
 		}
-
-		buildExistCondition = buildExistCondition && true
+		// pass; buildExistCondition already has the correct value
 	}
 
 	if buildExistCondition {