### Description

We now support storing KNN vectors as part of our indexed data.  These vectors should be included in the disk usage API.
server/src/test/java/org/elasticsearch/action/admin/indices/diskusage/IndexDiskUsageAnalyzerTests.java
"inverted_index",
                stats.getFields().get("suggest_1").getInvertedIndexBytes(),
                stats.total().totalBytes() / 3,
                0.05,
                2048
            );
            assertFieldStats(
                "suggest_2",
                "inverted_index",
                stats.getFields().get("suggest_2").getInvertedIndexBytes(),
                stats.total().totalBytes() * 2 / 3,
                0.05,
                2048
            );
            final IndexDiskUsageStats perField = collectPerFieldStats(dir);
            assertFieldStats(
                "suggest_1",
                "inverted_index",
                stats.getFields().get("suggest_1").getInvertedIndexBytes(),
                perField.getFields().get("suggest_1").getInvertedIndexBytes(),
                0.05,
                2048
            );
            assertFieldStats(
                "suggest_2",
                "inverted_index",
                stats.getFields().get("suggest_2").getInvertedIndexBytes(),
                perField.getFields().get("suggest_2").getInvertedIndexBytes(),
                0.05,
                2048