feat: stop deleting whole line when no point select in line editor (#5676)

* feat: stop deleting whole line when no point select in line editor

* Comments typo

Co-authored-by: DanielJGeiger <1852529+DanielJGeiger@users.noreply.github.com>

src/actions/actionDeleteSelected.tsx

@@ -72,12 +72,16 @@ export const actionDeleteSelected = register({
       if (!element) {
         return false;
       }
-      if (
-        // case: no point selected → delete whole element
-        selectedPointsIndices == null ||
-        // case: deleting last remaining point
-        element.points.length < 2
-      ) {
+      // case: no point selected → do nothing, as deleting the whole element
+      // is most likely a mistake, where you wanted to delete a specific point
+      // but failed to select it (or you thought it's selected, while it was
+      // only in a hover state)
+      if (selectedPointsIndices == null) {
+        return false;
+      }
+
+      // case: deleting last remaining point
+      if (element.points.length < 2) {
         const nextElements = elements.map((el) => {
           if (el.id === element.id) {
             return newElementWith(el, { isDeleted: true });