Open links in new tab in modal actions

Updated the link opening behavior in showCorrectAnswersModal, showModal, and showMapModal to use '_blank' as the default target, ensuring links open in a new browser tab instead of the current one.

Author: nageih

.vitepress/theme/components/LinkGrid.vue

@@ -210,7 +210,7 @@ function showCorrectAnswersModal(item) {
     focusCancel: true,
     preConfirm: () => {
       if (item.link) {
-        window.open(item.link, item.target || "_self");
+        window.open(item.link, item.target || "_blank");
       }
     },
     didOpen: () => {
@@ -331,7 +331,7 @@ function showModal(item) {
     focusCancel: true,
     preConfirm: () => {
       if (item.link) {
-        window.open(item.link, item.target || "_self");
+        window.open(item.link, item.target || "_blank");
       }
     },
     willOpen: () => {
@@ -398,7 +398,7 @@ function showMapModal(item) {
     focusCancel: true,
     preConfirm: () => {
       if (item.link) {
-        window.open(item.link, item.target || "_self");
+        window.open(item.link, item.target || "_blank");
       }
     },
     willOpen: () => {