Disable editor.autoClosingBrackets to allow xml.autoClosingTags to work

[NikolasKomonen]

Follow,

https://github.com/redhat-developer/vscode-java/blob/master/src/extension.ts#L374

https://github.com/redhat-developer/vscode-java/blob/master/src/extension.ts#L351

to notify the user to disable the setting

[fbricon]

you need to make sure editor.autoClosingBrackets is disabled for [xml] only, not for all (dunno how to do that)

[NikolasKomonen]

Will be done by

"configuration": {
    ...
},
"configurationDefaults": {
      "[xml]": {
        "editor.autoClosingBrackets": false
      }
}