resultOnly: true/false for polyfill

[todo]

aelf-web-extension/app/web/inject.js

Lines 43 to 46 in 91b6cac

	// Todo: resultOnly: true/false for polyfill
	}
	callbackWrap(result, callback = () => {}) {

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This issue was generated by todo based on a Todo comment in 91b6cac. It's been assigned to @hzz780 because they committed the code.