fix(ivy): LFrame needs to release memory on leaveView() (#35156)

Root cause is that for perf reasons we cache `LFrame` so that we don't have to allocate it all the time. To be extra fast we clear the `LFrame` on `enterView()` rather that on `leaveView()`. The implication of this strategy is that the deepest `LFrame` will retain objects until the `LFrame` allocation depth matches the deepest object.

The fix is to simply clear the `LFrame` on `leaveView()` rather then on `enterView()`

Fix #35148

PR Close #35156

packages/core/test/bundling/cyclic_import/bundle.golden_symbols.json

@@ -485,6 +485,9 @@
   {
     "name": "leaveView"
   },
+  {
+    "name": "leaveViewLight"
+  },
   {
     "name": "locateHostElement"
   },

packages/core/test/bundling/hello_world/bundle.golden_symbols.json

@@ -380,6 +380,9 @@
   {
     "name": "leaveView"
   },
+  {
+    "name": "leaveViewLight"
+  },
   {
     "name": "locateHostElement"
   },

packages/core/test/bundling/todo/bundle.golden_symbols.json

@@ -911,6 +911,9 @@
   {
     "name": "leaveView"
   },
+  {
+    "name": "leaveViewLight"
+  },
   {
     "name": "listenerInternal"
   },