fix: cross-collection drag and drop tab and format issues (#7584)

Close the open tab when a request is moved to a different collection
via drag and drop, preventing the "Request no longer exists" error.

Add format conversion when dragging requests between collections with
different formats (.bru vs .yml). A new IPC handler parses the source
file and re-serializes it in the target collection's format. Folder
cross-format moves are blocked with a toast error.

Co-authored-by: Chirag Chandrashekhar <cchirag85@gmail.com>

tests/collection/moving-requests/init-user-data/collection-security.json

@@ -0,0 +1,16 @@
+{
+  "collections": [
+    {
+      "path": "{{collectionPath}}/bru-collection",
+      "securityConfig": {
+        "jsSandboxMode": "safe"
+      }
+    },
+    {
+      "path": "{{collectionPath}}/yml-collection",
+      "securityConfig": {
+        "jsSandboxMode": "safe"
+      }
+    }
+  ]
+}

tests/collection/moving-requests/init-user-data/preferences.json

@@ -0,0 +1,12 @@
+{
+  "lastOpenedCollections": [
+    "{{collectionPath}}/bru-collection",
+    "{{collectionPath}}/yml-collection"
+  ],
+  "preferences": {
+    "onboarding": {
+      "hasLaunchedBefore": true,
+      "hasSeenWelcomeModal": true
+    }
+  }
+}