src/vs/workbench/contrib/codeEditor/browser/find/simpleFindWidget.ts/SimpleFindWidget/updateButtons
class SimpleFindWidget:	protected updateButtons(foundMatch: boolean) {
		const hasInput = this.inputValue.length > 0;
		this.prevBtn.setEnabled(this._isVisible && hasInput && foundMatch);
		this.nextBtn.setEnabled(this._isVisible && hasInput && foundMatch);
	}