Fix compose form submission reloading web interface (#19762)

* Fix compose form submission reloading web interface

Fix regression introduced by #19742

* Fix various compose form buttons being handled like submit buttons

* Fix coding style issue

* Fix missing onClick prop check

app/javascript/mastodon/features/reblogs/index.js

@@ -68,7 +68,7 @@ class Reblogs extends ImmutablePureComponent {
           showBackButton
           multiColumn={multiColumn}
           extraButton={(
-            <button className='column-header__button' title={intl.formatMessage(messages.refresh)} aria-label={intl.formatMessage(messages.refresh)} onClick={this.handleRefresh}><Icon id='refresh' /></button>
+            <button type='button' className='column-header__button' title={intl.formatMessage(messages.refresh)} aria-label={intl.formatMessage(messages.refresh)} onClick={this.handleRefresh}><Icon id='refresh' /></button>
           )}
         />