Create changeset for #3075 (#3076)

This PR adds a changeset file for #3075 (even though it's not really
necessary for the eventual patch release, it turns out we need it for
the changesets GH action to auto-file the PR).

Author: sachindshinde

.changeset/wild-guests-notice.md

@@ -0,0 +1,4 @@
+---
+"@apollo/composition": patch
+---
+Fix logic to compute missing subgraphs when generating composition hints/errors