fix(data): Fix nullish data filtering for grouped data

Do not exclude nullish data to determine axis' max value
for grouped data.

Ref naver#2096

src/ChartInternal/data/data.ts

@@ -492,12 +492,12 @@ export default {
 			const data: any[] = [];
 
 			t.values
-				.filter(v => isValue(v.value))
+				.filter(({value}) => isValue(value) || value === null)
 				.forEach(v => {
 					let {value} = v;
 
 					// exclude 'volume' value to correct mis domain calculation
-					if ($$.isCandlestickType(v)) {
+					if (value !== null && $$.isCandlestickType(v)) {
 						value = isArray(value) ? value.slice(0, 4) : [value.open, value.high, value.low, value.close];
 					}
 

test/internals/axis-spec.ts

@@ -2666,6 +2666,37 @@ describe("AXIS", function() {
 
 			expect(bb.generate(args)).to.not.throw;
 		});
+
+		it("set options", () => {
+			args = {
+				data: {
+					x: "x",
+					columns: [
+						["x", "1180", "980", "915"],
+						["1180", 74.07, null, null],
+						["980", null, 43.75, null],
+						["915", null, null, 42.47]
+					],
+					type: "bar",
+					groups: [
+						["1180", "980", "915"]
+					]
+				},
+				axis: {
+					x: {
+						type: "category"
+					}
+				}
+			};
+		});
+
+		it("y Axis max value should be scaled properly", () => {
+			const {internal} = chart;
+			const {max} = internal.getMinMaxValue();
+
+			expect(internal.scale.y.domain()[1]).to.be.closeTo(max, 10);
+			expect(+internal.$el.axis.y.select(".tick:nth-child(10) tspan").text()).to.be.closeTo(max, 10);
+		});
 	});
 
 	describe("x Axis tick width size", () => {