Allow inline code to be bolded and italicized (outline#8843)

Co-authored-by: codegen-sh[bot] <131295404+codegen-sh[bot]@users.noreply.github.com>

Author: codegen-sh[bot]

shared/editor/marks/Code.ts

@@ -21,7 +21,7 @@ export default class Code extends Mark {
 
   get schema(): MarkSpec {
     return {
-      excludes: "mention placeholder highlight em strong",
+      excludes: "mention placeholder highlight",
       parseDOM: [{ tag: "code", preserveWhitespace: true }],
       toDOM: () => ["code", { class: "inline", spellCheck: "false" }],
     };