Turn off use_on_type_format too, for languages that have format_on_save disabled (#14413)

Based on the discussion in
https://github.com/zed-industries/zed/issues/14400


Release Notes:

- N/A

assets/settings/default.json

@@ -133,14 +133,7 @@
   // The default number of lines to expand excerpts in the multibuffer by.
   "expand_excerpt_lines": 3,
   // Globs to match against file paths to determine if a file is private.
-  "private_files": [
-    "**/.env*",
-    "**/*.pem",
-    "**/*.key",
-    "**/*.cert",
-    "**/*.crt",
-    "**/secrets.yml"
-  ],
+  "private_files": ["**/.env*", "**/*.pem", "**/*.key", "**/*.cert", "**/*.crt", "**/secrets.yml"],
   // Whether to use additional LSP queries to format (and amend) the code after
   // every "trigger" symbol input, defined by LSP server capabilities.
   "use_on_type_format": true,
@@ -729,10 +722,12 @@
       }
     },
     "C": {
-      "format_on_save": "off"
+      "format_on_save": "off",
+      "use_on_type_format": false
     },
     "C++": {
-      "format_on_save": "off"
+      "format_on_save": "off",
+      "use_on_type_format": false
     },
     "CSS": {
       "prettier": {
@@ -784,6 +779,7 @@
     },
     "Markdown": {
       "format_on_save": "off",
+      "use_on_type_format": false,
       "prettier": {
         "allowed": true
       }