Reduce requests on label and assignee changes

Instead of sending a request for each label and assignee change on a
existing issue or patch, we should just do that for the new form,
where we wait for the confirmation for the final creation of the issue or patch.

src/views/projects/Cob/AssigneeInput.svelte

@@ -48,7 +48,7 @@
     if (valid && assignee) {
       updatedAssignees = [...updatedAssignees, assignee];
       inputValue = "";
-      if (mode !== "readOnly") {
+      if (hideEditIcon) {
         dispatch("save", updatedAssignees);
       }
     }
@@ -56,7 +56,7 @@
 
   function removeAssignee(assignee: string) {
     updatedAssignees = updatedAssignees.filter(x => x !== assignee);
-    if (mode !== "readOnly") {
+    if (hideEditIcon) {
       dispatch("save", updatedAssignees);
     }
   }

src/views/projects/Cob/LabelInput.svelte

@@ -42,7 +42,7 @@
     if (valid && sanitizedValue) {
       updatedLabels = [...updatedLabels, sanitizedValue];
       inputValue = "";
-      if (mode === "readWrite") {
+      if (hideEditIcon) {
         dispatch("save", updatedLabels);
       }
     }
@@ -50,7 +50,7 @@
 
   function removeLabel(label: string) {
     updatedLabels = updatedLabels.filter(x => x !== label);
-    if (mode === "readWrite") {
+    if (hideEditIcon) {
       dispatch("save", updatedLabels);
     }
   }