Problematic behavior of the "Share" button

[IgorA100]

IMPORTANT

• [ x] I have read the CONTRIBUTING.md and followed the provided tips
• [ x] I accept that the issue will be closed without comment if I do not check here
• [ x] I accept that the issue will be closed without comment if I do not fill out all items in the issue template.

Explain the Problem

If you click the "Share" button, then there are two problems:

1. The focus is NOT in the input field, and if you immediately start typing a name on the keyboard, then there is a transition to another feed"
2. If you select a user and share a publication with him, then the user will not receive a notification by e-mail that they have been shared with him, this is very bad!!!

Steps to Reproduce

1. When viewing the news feed, press the "Share" button and then immediately start typing the name of the person with whom you want to share.
2. Once shared with someone, they will not receive an email notification.

System Information

• News app version: 20.0.1
• Nextcloud version: 25.0.3
• Cron type: (system cron/python updater/...) cron
• PHP version: 8.1.2
• Database and version: PostgreSQL 14.4
• Browser and version: Irrelevant
• OS and version: Irrelevant

Contents of nextcloud/data/nextcloud.log

{"reqId":"rn18u3RtCQw56Ola4c99","level":3,"time":"2023-02-14T15:00:15+03:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Unable to receive content from /epz/order/notice/notice223/common-info.html?noticeInfoId=13821765","userAgent":"--","version":"25.0.3.2","data":{"app":"news"}}
{"reqId":"rn18u3RtCQw56Ola4c99","level":3,"time":"2023-02-14T15:00:15+03:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Unable to receive content from /epz/order/notice/notice223/common-info.html?noticeInfoId=13810276","userAgent":"--","version":"25.0.3.2","data":{"app":"news"}}
{"reqId":"rn18u3RtCQw56Ola4c99","level":3,"time":"2023-02-14T15:00:15+03:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Unable to receive content from /epz/order/notice/notice223/common-info.html?noticeInfoId=13810232","userAgent":"--","version":"25.0.3.2","data":{"app":"news"}}
{"reqId":"rn18u3RtCQw56Ola4c99","level":3,"time":"2023-02-14T15:00:15+03:00","remoteAddr":"","user":"--","app":"news","method":"","url":"--","message":"Unable to receive content from /epz/order/notice/notice223/common-info.html?noticeInfoId=13810161","userAgent":"--","version":"25.0.3.2","data":{"app":"news"}}

Contents of Browser Error Console

Read http://ggnome.com/wiki/Using_The_Browser_Error_Console if you are unsure what to put here

No error.

[IgorA100]

I took a quick look at the code and it seems that notifications are not provided here at all :(.
It's very sad :(

[Grotax]

For the notification we could use this: https://github.com/nextcloud/notifications/blob/master/docs/notification-workflow.md