Revert "fix variables in hints"

This reverts commit 8851cd8b1f.

server/GameServer/RpcHandlers.lean

@@ -114,10 +114,11 @@ def evalHintMessage : Expr → MetaM (Array Expr → MessageData) := fun _ => pu
 open Meta in
 /-- Find all hints whose trigger matches the current goal -/
 def findHints (goal : MVarId) (doc : FileWorker.EditableDocument) (initParams : Lsp.InitializeParams) : MetaM (Array GameHint) := do
+  goal.withContext do
     let some level ← getLevelByFileName? initParams doc.meta.mkInputContext.fileName
       | throwError "Level not found: {doc.meta.mkInputContext.fileName}"
     let hints ← level.hints.filterMapM fun hint => do
-    openAbstractCtxResult hint.goal fun hintFVars hintGoal => goal.withContext do
+      openAbstractCtxResult hint.goal fun hintFVars hintGoal => do
         if let some fvarBij := matchExpr (← instantiateMVars $ hintGoal) (← instantiateMVars $ ← inferType $ mkMVar goal)
         then
           let lctx := (← goal.getDecl).lctx