Calculate virtual's acceptance data and multiset after importing a new pruning point

[someone235]

Fixes #1699

[codecov]

Codecov Report

Merging #1700 (cc0b652) into v0.10.1-dev (ccfe8a4) will increase coverage by 0.02%.
The diff coverage is 50.00%.

❗ Current head cc0b652 differs from pull request most recent head 80753f6. Consider uploading reports for the commit 80753f6 to get more accurate results

@@               Coverage Diff               @@
##           v0.10.1-dev    #1700      +/-   ##
===============================================
+ Coverage        59.41%   59.44%   +0.02%     
===============================================
  Files              551      551              
  Lines            21930    21940      +10     
===============================================
+ Hits             13030    13042      +12     
+ Misses            6825     6821       -4     
- Partials          2075     2077       +2     

Impacted Files	Coverage Δ
...processor/validateandinsertimportedpruningpoint.go	71.05% <50.00%> (-3.95%)	⬇️
app/protocol/flows/blockrelay/handle_relay_invs.go	70.00% <0.00%> (+1.25%)	⬆️
...selectedchainstore/headers_selected_chain_store.go	70.00% <0.00%> (+4.28%)	⬆️
...ain/consensus/database/binaryserialization/hash.go	70.58% <0.00%> (+5.88%)	⬆️

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