Flow Save button is red now
![image](https://github.com/kestra-io/kestra/assets/2064609/4d23679a-8b60-413f-9bb0-ca367b0a897e)
Actually, if the flow have no unsaved change, the button is red.
The button:
- should be purple without any change 
- should be red if there is an error 
- should display a proper tooltip with the error message if any 
ui/src/components/graph/Topology.vue
ui/src/components/graph/Topology.vue
diff --git a/ui/src/components/graph/Topology.vue b/ui/src/components/graph/Topology.vue
index e8292207bf..c2dec6824a 100644
--- a/ui/src/components/graph/Topology.vue
+++ b/ui/src/components/graph/Topology.vue
@@ -1180,7 +1180,7 @@
                     size="large"
                     @click="save"
                     v-if="isAllowedEdit"
-                    :type="flowError || !haveChange ? 'danger' : 'primary'"
+                    :type="flowError ? 'danger' : 'primary'"
                     :disabled="!haveChange"
                     class="edit-flow-save-button"
                 >
