[MM-60685] Fix racy TestSyncLdap (#28324)

server/public/shared/request/context.go

@@ -54,9 +54,19 @@ func TestContext(t testing.TB) *Context {
 	return EmptyContext(logger)
 }
 
-// clone creates a shallow copy of Context, allowing clones to apply per-request changes.
+// Clone creates a deep copy of [CTX].
+// It should only be used to pass a [CTX] to a separate goroutine that
+// has a longer lifespan than the main goroutine handling the request.
+// It should be used sparsely as coping [CTX] is often unnecessary.
+func (c *Context) Clone() CTX {
+	return c.clone()
+}
+
+// clone creates a deep copy of [Context], allowing clones to apply per-request changes.
+// It unexported to prevent leaking the [Context] type from the [CTX] interface.
 func (c *Context) clone() *Context {
 	cCopy := *c
+	cCopy.session = *c.session.DeepCopy()
 	return &cCopy
 }
 
@@ -173,4 +183,5 @@ type CTX interface {
 	WithLogger(mlog.LoggerIFace) CTX
 	WithContext(ctx context.Context) CTX
 	With(func(ctx CTX) CTX) CTX
+	Clone() CTX
 }