[Single Program] Verify that the system does not allow Admin enter additional characters if maximum number of characters in “Заголовок” field is exceeded

[lediannita]

Priority: High

Preconditions

1. Admin is logged in.
2. "Add New Program" modal is open.
3. "Add a section" modal is open.
4. Template T-1 is selected.

Steps to reproduce

1. Focus on “Заголовок” field
2. Enter 60 characters on “Заголовок” field
3. Try to enter additional characters on “Заголовок” field

Expected result
Additional characters are not shown on “Заголовок” field
The character counter shows “60/60” for the “Заголовок” field

User story:#648