fix: fix manipulation of JsxSelfClosingElement
While I investigating #1409, I found suspicious code from stack trace. Because it works as expected after fixing there, I made this pull request.
I also found some similar code pieces, though I'm not sure if they cause error.
https://github.com/dsherret/ts-morph/blob/c12673319f919a4386685c63d31356cd2c1a981c/packages/ts-morph/src/manipulation/nodeHandlers/RangeParentHandler.ts#L89-L90
https://github.com/dsherret/ts-morph/blob/c12673319f919a4386685c63d31356cd2c1a981c/packages/ts-morph/src/manipulation/nodeHandlers/DefaultParentHandler.ts#L64-L65
https://github.com/dsherret/ts-morph/blob/c12673319f919a4386685c63d31356cd2c1a981c/packages/ts-morph/src/manipulation/nodeHandlers/UnwrapParentHandler.ts#L50-L51