Reduce default C++ inlay hint font size 12 to match VS and potentially reduce confusion (#9480)

* Reduce default inlay hint font size to 12 match VS and reduce confusion.

Author: sean-mcmanus

Extension/package.json

@@ -4034,17 +4034,20 @@
       "[cpp]": {
         "editor.wordBasedSuggestions": false,
         "editor.suggest.insertMode": "replace",
-        "editor.semanticHighlighting.enabled": true
+        "editor.semanticHighlighting.enabled": true,
+        "editor.inlayHints.fontSize": 12
       },
       "[cuda-cpp]": {
         "editor.wordBasedSuggestions": false,
         "editor.suggest.insertMode": "replace",
-        "editor.semanticHighlighting.enabled": true
+        "editor.semanticHighlighting.enabled": true,
+        "editor.inlayHints.fontSize": 12
       },
       "[c]": {
         "editor.wordBasedSuggestions": false,
         "editor.suggest.insertMode": "replace",
-        "editor.semanticHighlighting.enabled": true
+        "editor.semanticHighlighting.enabled": true,
+        "editor.inlayHints.fontSize": 12
       }
     },
     "semanticTokenTypes": [