Support dynamic_action in composite filter (#33511)

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Signed-off-by: Yanjun Xiang <yanjunxiang@google.com>

Mirrored from https://github.com/envoyproxy/envoy @ b5c7e512e073ea4e8ef478d93cfae3d610cada98

envoy/extensions/filters/http/composite/v3/composite.proto

@@ -55,9 +55,6 @@ message ExecuteFilterAction {
 
   // Dynamic configuration of filter obtained via extension configuration discovery service.
   // Only one of ``typed_config`` or ``dynamic_config`` can be set.
-  // When composite filter is in upstream filter chain, the ``dynamic_config``
-  // can not be set. TBD: Refactor cluster manager init sequence to Support this.
-  // Please check https://github.com/envoyproxy/envoy/issues/33218 for details.
   DynamicConfig dynamic_config = 2
       [(udpa.annotations.field_migrate).oneof_promotion = "config_type"];
 }