feat(gnovm): returns error as Go when assignment with a function which does not return any value

[hthieu1110]

This PR aims at resolving this issue: #1082

This depends on #3017 because it refactored the code to sync the logic/code between AssignStmt vs ValueDecl.

Related #2695

Contributors' checklist...

• Added new tests, or not needed, or not feasible
• Provided an example (e.g. screenshot) to aid review or the PR is self-explanatory
• Updated the official documentation or not needed
• No breaking changes were made, or a BREAKING CHANGE: xxx message was included in the description
• Added references to related issues and PRs
• Provided any useful hints for running manual tests

[codecov]

Codecov Report

Attention: Patch coverage is 95.74468% with 6 lines in your changes missing coverage. Please review.

Project coverage is 63.10%. Comparing base (ed91991) to head (2460630).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
gnovm/pkg/gnolang/preprocess.go	95.74%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3049      +/-   ##
==========================================
- Coverage   63.11%   63.10%   -0.01%     
==========================================
  Files         548      548              
  Lines       78514    78486      -28     
==========================================
- Hits        49553    49530      -23     
+ Misses      25616    25612       -4     
+ Partials     3345     3344       -1     

Flag	Coverage Δ
contribs/gnodev	60.57% <ø> (ø)
gno.land	63.82% <ø> (ø)
gnovm	67.86% <95.74%> (-0.02%)	⬇️
misc/genstd	79.72% <ø> (ø)
tm2	62.41% <ø> (-0.03%)	⬇️

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