fix(api-client): enhance callback typing for mutation state and fix overloads in createAPIClient

Author: radist2s

.changeset/poor-pugs-fix.md

@@ -4,3 +4,9 @@
 ---
 
 Fixed callback typing and client factory overload generation for partial callback clients.
+
+- Added `getMutationCache` to mutation state callback typing in `qraftAPIClient`, so it is available on generated
+  clients when relevant callbacks are provided.
+- Fixed generated `createAPIClient` operation-client overloads to return `APIBasicQueryClientServices<..., Callbacks>`
+  and `APIBasicClientServices<..., Callbacks>` (instead of incorrectly locking to `DefaultCallbacks`) for partial
+  callback configurations.