Fix neofs-adm group processing during an update

[fyrchik]

1. Assign the group to all contracts.
2. Assign group to the alphabet ones too.

[codecov]

Codecov Report

Merging #1631 (4abe5a7) into master (4abe5a7) will not change coverage.
The diff coverage is n/a.

❗ Current head 4abe5a7 differs from pull request most recent head 786b165. Consider uploading reports for the commit 786b165 to get more accurate results

@@           Coverage Diff           @@
##           master    #1631   +/-   ##
=======================================
  Coverage   33.30%   33.30%           
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  Files         331      331           
  Lines       22595    22595           
=======================================
  Hits         7526     7526           
  Misses      14451    14451           
  Partials      618      618           

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