Magento 2 admin custom save button send request twice - magento2

Question

Basically, I want to send 'store' as a parameter when I save the form. For this, I customized the save button and added store_id there, but now save method is called twice. Any idea why this is happening and how can I fix it?
This is the button:(Vendor\Module\Block\Adminhtml\Entity\Edit\SaveButton.php)
public function getButtonData()
{
return [
'label' => __('Save'),
'class' => 'save primary',
'data_attribute' => [
'mage-init' => [
'buttonAdapter' => [
'actions' => [
[
'targetName' => 'vendor_module_entity_form.vendor_module_entity_form',
'actionName' => 'save',
'params' => [
true,
['store' => 5]
]
]
]
]
]
],
'sort_order' => 90,
];
}
and this is the ui_component (vendor_entity_entity_form.xml):
......
<settings>
<buttons>
<button class="Vendor\Module\Block\Adminhtml\Entity\Edit\SaveButton" name="save"/>
</buttons>
</settings>
<dataSource name="entiity_form_data_source">
<settings>
<submitUrl path="*/*/save"/>
<validateUrl path="*/*/validate"/>
</settings>
</dataSource>
......

Answer 1

Please try:
public function getButtonData(): array
{
return [
'label' => __('Save'),
'class' => 'save primary',
'data_attribute' => [
'mage-init' => ['button' => ['event' => 'save']],
'form-role' => 'save',
],
'sort_order' => 10
];
}

Answer 2

please try the below code.
$this->buttonList->add(
'select_all',
[
'label' => __('Select All Rates and Save'),
'class' => 'save',
'onclick' => "jQuery('#testhidden').val(1)",
'data_attribute' => [
'mage-init' => ['button' => ['event' => 'save', 'target' => '#edit_form']],
]
],
10
);
Create a hidden field in the form.php where fields are defined
$fieldset->addField(
'testhidden',
'hidden',
['name' => 'testhidden', 'value' => 0, 'no_span' => true]
);