bug(tm2/gnovm): multi-msg call overwrites previous event

[r3v4s]

Bug: multi-msg call overwrites previous event

related pr #1653

Description

event gets overwrite in multi-msg transaction call

Steps to reproduce

---

deploy first contract

package event2

import (
	"std"
)

func Hello() {
	inner()
	std.Emit("t", "k", "v")
}

func inner() {
	std.Emit("t", "k", "v")
}

---

deploy second contract

package event

import (
	"std"

	e2 "gno.land/r/demo/event2"
)

func Hello() {
	inner()
	std.Emit("t", "k", "v")
}

func inner() {
	e2.Hello()
	std.Emit("t", "k", "v")
}

func Other() {
	std.Emit("other", "k", "v")
}

call with multi-msg like below (with adena)

await adena.DoContract({
    messages: [{
        "type": "/vm.m_call",
        "value": {
          "caller": "g1jg8mtutu9khhfwc4nxmuhcpftf0pajdhfvsqf5",
          "send": "",
          "pkg_path": "gno.land/r/demo/event",
          "func": "Hello",
          "args": []
        }
      },{
        "type": "/vm.m_call",
        "value": {
          "caller": "g1jg8mtutu9khhfwc4nxmuhcpftf0pajdhfvsqf5",
          "send": "",
          "pkg_path": "gno.land/r/demo/event",
          "func": "Other",
          "args": []
        }
      }],
    gasFee: 1, 
    gasWanted: 2000000
  });

Expected behaviour

should print each function's events

Actual behaviour

{
  "jsonrpc": "2.0",
  "id": "",
  "result": {
    "height": "43",
    "results": {
      "deliver_tx": [
        {
          "ResponseBase": {
            "Error": null,
            "Data": null,
            "Events": [
              {
                "@type": "/tm.gnoEvent",
                "pkg_path": "gno.land/r/demo/event",
                "type": "other",
                "func": "Other",
                "attrs": [
                  {
                    "key": "k",
                    "value": "v"
                  }
                ]
              },
              {
                "@type": "/tm.gnoEvent",
                "pkg_path": "gno.land/r/demo/event",
                "type": "other",
                "func": "Other",
                "attrs": [
                  {
                    "key": "k",
                    "value": "v"
                  }
                ]
              }
            ],
            "Log": "msg:0,success:true,log:,events:[]\nmsg:1,success:true,log:,events:[]",
            "Info": ""
          },
          "GasWanted": "2000000",
          "GasUsed": "270168"
        }
      ],
      "end_block": {
        "ResponseBase": {
          "Error": null,
          "Data": null,
          "Events": null,
          "Log": "",
          "Info": ""
        },
        "ValidatorUpdates": null,
        "ConsensusParams": null,
        "Events": null
      },
      "begin_block": {
        "ResponseBase": {
          "Error": null,
          "Data": null,
          "Events": null,
          "Log": "",
          "Info": ""
        }
      }
    }
  }
}

number of event looks good, but contents are being over-write by last called function's event

[notJoon]

I'll investigate on this weekend

Maybe fixed