Simple address: Should return error when viewing the content in the missing language

Description

Note:

• Try to run this case in some daily site:8.6.2, 9.9.1, 10.2.0, 10.10.6, 10.12.6, 11-12-1 (Core: 11.10.0.0) > get 404 error when view content by URL: Sitename/en/P1
• I am not sure which is exactly version has the bug, I tried on daily site 11.19.0 (Core:11.11.0.0), 11.20.0 and latest site > see the bug
  step to reproduce:

1. create new site which has setting: culture="en-US" uiCulture="en"
2. Go to Site
3. select site language = SV
4. Create Page1 which has simple address = P1 and publish page
5. Go to View mode
6. View Page1 by URL: Sitename/P1 > return Page1 in SV language
7. View Page1 by URL: Sitename/sv/P1 > return Page1 in SV language
8. View Page1 by URL: Sitename/en/P1

Expected: should return 404 error

Actual: Return Page1 in SV language