fix(ui): Enter on a selectable title opens it even with its words selected

endsTextSelection takes the click event and exempts a keyboard click (detail 0): Enter / Space
ends no selection, so a title selected and then tabbed to opened nothing. All three callers
(FocusSafeButton, the Plex caption, the video card title) go through it.

frontend/src/components/VideoCard.nav.dom.test.tsx

@@ -112,7 +112,12 @@ describe("VideoCard — a title you select", () => {
     range.selectNodeContents(title);
     window.getSelection()!.removeAllRanges();
     window.getSelection()!.addRange(range);
-    const click = new MouseEvent("click", { bubbles: true, cancelable: true, button: 0 });
+    const click = new MouseEvent("click", {
+      bubbles: true,
+      cancelable: true,
+      button: 0,
+      detail: 1,
+    });
     title.dispatchEvent(click);
     expect(onOpen).not.toHaveBeenCalled();
     expect(click.defaultPrevented).toBe(true);