[Bug]: 在FlowLayout添加很多相同控件后拖动窗体，窗体尺寸突变 about pyqt-fluent-widgets HOT 4 CLOSED

# coding:utf-8
import sys
from PyQt5.QtCore import QEasingCurve
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QScrollArea

from qfluentwidgets import FlowLayout


class Demo(QScrollArea):

    def __init__(self):
        super().__init__()
        self.w = QWidget(self)
        self.setWidget(self.w)
        self.setWidgetResizable(True)
        layout = FlowLayout(self.w, needAni=True)

        # customize animation
        layout.setAnimation(250, QEasingCurve.OutQuad)

        layout.setContentsMargins(30, 30, 30, 30)
        layout.setVerticalSpacing(20)
        layout.setHorizontalSpacing(10)

        layout.addWidget(QPushButton('aiko'))
        layout.addWidget(QPushButton('刘静爱'))
        layout.addWidget(QPushButton('柳井爱子'))
        layout.addWidget(QPushButton('aiko 赛高'))
        layout.addWidget(QPushButton('aiko 太爱啦😘'))
        layout.addWidget(QPushButton('aiko'))
        layout.addWidget(QPushButton('刘静爱'))
        layout.addWidget(QPushButton('柳井爱子'))
        layout.addWidget(QPushButton('aiko 赛高'))
        layout.addWidget(QPushButton('aiko 太爱啦😘'))
        layout.addWidget(QPushButton('aiko'))
        layout.addWidget(QPushButton('刘静爱'))
        layout.addWidget(QPushButton('柳井爱子'))
        layout.addWidget(QPushButton('aiko 赛高'))
        layout.addWidget(QPushButton('aiko 太爱啦😘'))
        layout.addWidget(QPushButton('aiko'))
        layout.addWidget(QPushButton('刘静爱'))
        layout.addWidget(QPushButton('柳井爱子'))
        layout.addWidget(QPushButton('aiko 赛高'))
        layout.addWidget(QPushButton('aiko 太爱啦😘'))

        self.resize(250, 300)
        self.setStyleSheet('Demo{background: white} QPushButton{padding: 5px 10px; font:15px "Microsoft YaHei"}')


if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = Demo()
    w.show()
    app.exec_()