[MM-53799] Stop autocompleting while the user is typing `https://`

[devinbinnie]

Summary

In circumstances where the user stopped typing, or was slow typing the beginning of their server URL, the URL validation would kick in and erroneously mistake the beginning of a URL (ie. any substring of https://) as a hostname, and try to add https:// for the user. This would cause some confusion and frustration for users trying to type.

This PR fixes the validation to recognize any leading substring of https:// as an invalid URL before it tries to call it a hostname. This stops the user from having to backspace and correct themselves while typing, and should still server to help people typing without the leading https://. Additionally, I added a QoL fix to stop the trailing / from appearing while you were typing a host name, so that if you do stop, you don't have to backspace the / first to keep typing the name.

Ticket Link

https://mattermost.atlassian.net/browse/MM-53799

Stop autocompleting while the user is typing `https://`

[github-actions[bot]]

Here are the test results below:

Test Summary for Linux on commit 8fb3ac46c0f31aed9821a161dd1e1c74ec830a62

The following known failed tests have been fixed on Linux:

• menu/view MM-T820 should open Developer Tools For Application Wrapper for main window

Test Summary for macOS on commit 8fb3ac46c0f31aed9821a161dd1e1c74ec830a62

New failed tests found on macOS:

• LongServerName MM-T4050 Long server name

The following known failed tests have been fixed on macOS:

• popup MM-T2827_1 should be able to select all in popup windows

[devinbinnie]

might be a rare cases, that can occur when typing

• typing Capital HTTPS, changes it into lower and adds https

Will make a fix for this.