### 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
);
            });
            final IndexDiskUsageStats stats = IndexDiskUsageAnalyzer.analyze(testShardId(), lastCommit(dir), () -> {});
            final IndexDiskUsageStats perField = collectPerFieldStats(dir);
            logger.info("--> stats {} per field {}", stats, perField);
            assertFieldStats("total", "points", stats.total().getPointsBytes(), perField.total().getPointsBytes(), 0.01, 2048);
            assertFieldStats(
                "triangle_1",
                "points",
                stats.getFields().get("triangle_1").getPointsBytes(),
                stats.total().getPointsBytes() / 7,
                0.01,
                2048
            );
            assertFieldStats(
                "triangle_2",
                "triangle",
                stats.getFields().get("triangle_2").getPointsBytes(),
                stats.total().getPointsBytes() * 2 / 7,
                0.01,
                2048
            );
            assertFieldStats(
                "triangle_3",
                "triangle",
                stats.getFields().get("triangle_3").getPointsBytes(),
                stats.total().getPointsBytes() * 4 / 7,
                0.01,
                2048
            );