fix: set CSS class for the current quarter following the same pattern as other views

Problem: For calendar views such as Day, Month, and Year, the CSS class react-datepicker__{view}-text--today is applied. However, for the Quarter view, this class was not being set, even though the corresponding style is present.

Author: maksimyaromin

src/month.tsx

@@ -932,6 +932,7 @@ export default class Month extends Component<MonthProps> {
         "react-datepicker__quarter-text--range-start":
           this.isRangeStartQuarter(q),
         "react-datepicker__quarter-text--range-end": this.isRangeEndQuarter(q),
+        "react-datepicker__quarter-text--today": this.isCurrentQuarter(day, q),
       },
     );
   };

src/test/month_test.test.tsx

@@ -16,6 +16,7 @@ import {
   getMonth,
   getMonthShortInLocale,
   getQuarter,
+  getQuarterShortInLocale,
   getStartOfMonth,
   getStartOfQuarter,
   getStartOfWeek,
@@ -1247,6 +1248,60 @@ describe("Month", () => {
     ).toBe(true);
   });
 
+  it("should return quarter-text--today class if quarter is current year's quarter", () => {
+    const date = new Date();
+    const { container } = render(
+      <Month day={date} selected={date} showQuarterYearPicker />,
+    );
+    const quarter = container.querySelectorAll(
+      ".react-datepicker__quarter-text--today",
+    )[0]?.textContent;
+    expect(quarter).toBe(getQuarterShortInLocale(getQuarter(date)));
+  });
+
+  it("should not return quarter-text--today class if quarter is not current year's quarter", () => {
+    const lastYearDate = new Date();
+    lastYearDate.setFullYear(lastYearDate.getFullYear() - 1);
+    const { container } = render(
+      <Month
+        day={lastYearDate}
+        selected={lastYearDate}
+        showQuarterYearPicker
+      />,
+    );
+    const quarters = container.querySelectorAll(
+      ".react-datepicker__quarter-text--today",
+    );
+    expect(quarters).toHaveLength(0);
+  });
+
+  it("should include aria-current property if quarter is current year's quarter", () => {
+    const date = new Date();
+    const { container } = render(
+      <Month day={date} selected={date} showQuarterYearPicker />,
+    );
+    const ariaCurrent = container
+      .querySelector(".react-datepicker__quarter-text--today")
+      ?.getAttribute("aria-current");
+    expect(ariaCurrent).toBe("date");
+  });
+
+  it("should not include aria-current property if quarter is not current year's quarter", () => {
+    const lastYearDate = new Date();
+    lastYearDate.setFullYear(lastYearDate.getFullYear() - 1);
+    const { container } = render(
+      <Month
+        day={lastYearDate}
+        selected={lastYearDate}
+        showQuarterYearPicker
+      />,
+    );
+    const ariaCurrent = container
+      .querySelector(".react-datepicker__quarter-text")
+      ?.getAttribute("aria-current");
+    expect(ariaCurrent).toBeNull();
+  });
+
   it("should enable keyboard focus on the preselected component", () => {
     const { container } = render(
       <Month