LS returns duplicate error in playground

[alse]

Problem

LS returns duplicate error in playground.

Steps to Reproduce

• Visit https://play.onflow.org/
• Click on the first account
• Delete the last character from the String type on line 22

(Discovered in onflow/flow-playground#288 and doesn't appear to be related to the playground code)

LS logs from https://github.com/onflow/flow-playground/blob/staging/src/util/language-client.ts#L63

{
    "method": "textDocument/publishDiagnostics",
    "params": {
        "uri": "inmemory://model/4",
        "diagnostics": [
            {
                "range": {
                    "start": {
                        "line": 21,
                        "character": 29
                    },
                    "end": {
                        "line": 21,
                        "character": 34
                    }
                },
                "severity": 1,
                "message": "cannot find type in this scope: `Strin`. not found in this scope"
            },
            {
                "range": {
                    "start": {
                        "line": 21,
                        "character": 29
                    },
                    "end": {
                        "line": 21,
                        "character": 34
                    }
                },
                "severity": 1,
                "message": "cannot find type in this scope: `Strin`. not found in this scope"
            }
        ]
    },
    "jsonrpc": "2.0"
}

[
    {
        "resource": {
            "$mid": 1,
            "external": "inmemory://model/3",
            "path": "/3",
            "scheme": "inmemory",
            "authority": "model"
        },
        "owner": "default",
        "severity": 8,
        "message": "cannot find type in this scope: `Strin`. not found in this scope",
        "startLineNumber": 22,
        "startColumn": 30,
        "endLineNumber": 22,
        "endColumn": 35
    },
    {
        "resource": {
            "$mid": 1,
            "external": "inmemory://model/3",
            "path": "/3",
            "scheme": "inmemory",
            "authority": "model"
        },
        "owner": "default",
        "severity": 8,
        "message": "cannot find type in this scope: `Strin`. not found in this scope",
        "startLineNumber": 22,
        "startColumn": 30,
        "endLineNumber": 22,
        "endColumn": 35
    }
]

[fotescodev]

@sideninja was this completed or should we change the status to In Progress?