fix: place the upgrade check in right place

[unclezoro]

Description

Currently the BEP159 upgrade check is placed in the validateBasic function which is stateless and dont have the context about block height, it will cause the wrong check on cmd and SDK.

Rationale

We move the check to the handler instead of validateBasic.

It wont impact the on-chain logic and will not cause hardfork.

Example

No

[codecov-commenter]

Codecov Report

Merging #327 (ac45b2e) into master (0211967) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #327      +/-   ##
==========================================
- Coverage   46.80%   46.79%   -0.01%     
==========================================
  Files         247      247              
  Lines       23732    23735       +3     
==========================================
  Hits        11107    11107              
- Misses      11959    11962       +3     
  Partials      666      666