[GH-16199] add IsValid to model OpenDialogRequest (#26526)

* [GH-16199] add IsValid to model OpenDialogRequest

* [GH-16199] add IsValid to model OpenDialogRequest, revert remove of translations

* [GH-16199] fix tests after revert

* [GH-16199] add IsValid to model OpenDialogRequest

* [GH-16199] revert validation of icon url

* [GH-16199] update go sum

* [GH-16199] log warning for invalid dialog

* [GH-16199] log error for invalid dialog

* [GH-16199] log warning for invalid dialog

* [GH-16199] fix golang-ci

---------

Co-authored-by: Lukas Eipert <git@leipert.io>
Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/api4/integration_action.go

@@ -84,7 +84,7 @@ func openDialog(c *Context, w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if appErr := c.App.OpenInteractiveDialog(dialog); appErr != nil {
+	if appErr := c.App.OpenInteractiveDialog(c.AppContext, dialog); appErr != nil {
 		c.Err = appErr
 		return
 	}