[Maps] Show create filter button for top-term tooltip property

x-pack/plugins/maps/public/layers/fields/es_agg_field.ts

@@ -90,7 +90,7 @@ export class ESAggField implements IESAggField {
   async createTooltipProperty(value: string | undefined): Promise<ITooltipProperty> {
     const indexPattern = await this._source.getIndexPattern();
     const tooltipProperty = new TooltipProperty(this.getName(), await this.getLabel(), value);
-    return new ESAggTooltipProperty(tooltipProperty, indexPattern, this);
+    return new ESAggTooltipProperty(tooltipProperty, indexPattern, this, this.getAggType());
   }
 
   getValueAggDsl(indexPattern: IndexPattern): unknown | null {

x-pack/plugins/maps/public/layers/tooltips/es_agg_tooltip_property.ts

@@ -4,9 +4,25 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 import { ESTooltipProperty } from './es_tooltip_property';
+import { AGG_TYPE } from '../../../common/constants';
+import { ITooltipProperty } from './tooltip_property';
+import { IField } from '../fields/field';
+import { IndexPattern } from '../../../../../../src/plugins/data/public';
 
 export class ESAggTooltipProperty extends ESTooltipProperty {
+  private readonly _aggType: AGG_TYPE;
+
+  constructor(
+    tooltipProperty: ITooltipProperty,
+    indexPattern: IndexPattern,
+    field: IField,
+    aggType: AGG_TYPE
+  ) {
+    super(tooltipProperty, indexPattern, field);
+    this._aggType = aggType;
+  }
+
   isFilterable(): boolean {
-    return false;
+    return this._aggType === AGG_TYPE.TERMS;
   }
 }