fix(core): size regression with closure compiler (#25531)

By pulling in `compiler` into `core` the `compiler` was not
100% tree-shakable and about  8KB of code was retained
when tree-shaken with closure.

PR Close #25531

packages/core/test/bundling/hello_world_r2/bundle.golden_symbols.json

@@ -1439,9 +1439,6 @@
   {
     "name": "SyncAsync"
   },
-  {
-    "name": "TAG_DEFINITIONS"
-  },
   {
     "name": "TAG_TO_PLACEHOLDER_NAMES"
   },
@@ -1730,9 +1727,6 @@
   {
     "name": "_DEFAULT_SOURCE_LANG$1"
   },
-  {
-    "name": "_DEFAULT_TAG_DEFINITION"
-  },
   {
     "name": "_DOCTYPE"
   },
@@ -3509,6 +3503,9 @@
   {
     "name": "refCount"
   },
+  {
+    "name": "registerContext"
+  },
   {
     "name": "registerModuleFactory"
   },