[Bug]: LineEdit和PushButton设置最小尺寸，放在QHBoxLayout中，出现不对齐现象

[yuhou0814]

What happened?

Operation System

win10

Python Version

3.9

PyQt/PySide Version

PyQt5-Qt5 5.15.2

PyQt/PySide-Fluent-Widgets Version

V1.7.1

How to Reproduce?

Minimum code

class test1(QWidget):
    def __init__(self):
        super().__init__()
        self.line=LineEdit(self)
        self.ptn=PushButton('123',self)
        self.label=QLabel("sadfa",self)
        self.space_item=QSpacerItem(10,10,QSizePolicy.Minimum,QSizePolicy.Minimum)
        
        self.h_layout=QHBoxLayout()
        self.h_layout.addItem(self.space_item)
        self.h_layout.addWidget(self.label)
        self.h_layout.addItem(self.space_item)
        self.h_layout.addWidget(self.line,Qt.AlignCenter)
        self.h_layout.addItem(self.space_item)
        self.h_layout.addWidget(self.ptn,Qt.AlignCenter)
        self.h_layout.addItem(self.space_item)
        self.g_layout=QGridLayout()
        for i in [self.line,self.ptn,self.label]:
            i.setMinimumSize(50,40)
        self.setLayout(self.g_layout)
        self.g_layout.addLayout(self.h_layout,0,0,1,2)

        for i,factor in enumerate([2,3,1,8,1,2,4]):
            self.h_layout.setStretch(i,factor)
        self.resize(100, 100)
if __name__ == '__main__':
    app = QApplication(sys.argv)
    test=test1()
    test.show()
  
    
    sys.exit(app.exec_())



版本：
```python
Name: PyQt-Fluent-Widgets
Version: 1.7.1
Summary: A fluent design widgets library based on PyQt5
Home-page: https://qfluentwidgets.com
Author: zhiyiYo
Author-email: shokokawaii@outlook.com
License: GPLv3
Location: e:\anaconda3\envs\pytorch529\lib\site-packages
Requires: darkdetect, PyQt5, PyQt5-Frameless-Window
Required-by: