Fix three bugs found in self-review

- openDockedChat: set location to "right" when in center mode so
  the dock button actually does something visible
- onChatGxyClick: only toggle the left sidebar in center mode to
  avoid showing two chat surfaces simultaneously in docked mode
- dockToSide/dockToBottomPanel: only navigate to "/" when currently
  on /chatgxy, preserving the user's current route otherwise

Author: dannon

client/src/components/ActivityBar/ActivityBar.vue

@@ -221,8 +221,8 @@ function toggleSidebar(toggle: string = "", to: string | null = null) {
 }
 
 function onChatGxyClick() {
-    toggleSidebar("chatgxy");
     if (chatStore.isCenterMode) {
+        toggleSidebar("chatgxy");
         if (route.path.startsWith("/chatgxy")) {
             router.push("/");
         } else {

client/src/components/ChatGXY.vue

@@ -15,7 +15,7 @@ import {
 import { FontAwesomeIcon } from "@fortawesome/vue-fontawesome";
 import { BSkeleton } from "bootstrap-vue";
 import { computed, nextTick, onMounted, ref, watch } from "vue";
-import { useRouter } from "vue-router/composables";
+import { useRoute, useRouter } from "vue-router/composables";
 
 import { GalaxyApi } from "@/api";
 import { getGalaxyInstance } from "@/app";
@@ -53,6 +53,7 @@ const emit = defineEmits<{
     (e: "undock"): void;
 }>();
 
+const route = useRoute();
 const router = useRouter();
 const chatStore = useChatStore();
 
@@ -386,14 +387,18 @@ function dockToSide() {
     chatStore.setActiveChatId(currentChatId.value);
     chatStore.setLocation("right");
     chatStore.showChat();
-    router.push("/");
+    if (route.path.startsWith("/chatgxy")) {
+        router.push("/");
+    }
 }
 
 function dockToBottomPanel() {
     chatStore.setActiveChatId(currentChatId.value);
     chatStore.setLocation("bottom");
     chatStore.showChat();
-    router.push("/");
+    if (route.path.startsWith("/chatgxy")) {
+        router.push("/");
+    }
 }
 
 watch(currentChatId, (newId) => {

client/src/components/ChatGXY/ChatHistoryPanel.vue

@@ -74,6 +74,9 @@ function startNewChat() {
 }
 
 function openDockedChat() {
+    if (chatStore.isCenterMode) {
+        chatStore.setLocation("right");
+    }
     const latestId = chatHistory.value.length > 0 ? chatHistory.value[0]!.id : null;
     chatStore.showChat(latestId);
 }