Change resource-id type to AccAddress

[iramiller]

Description

Change the type cast on resource-id of a contract specification to AccAddress from MetadataAddress. This allows the resource-id to properly reference smart contract addresses on chain.

closes: #1646

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• Targeted PR against correct branch (see CONTRIBUTING.md)
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #1647 (6048273) into main (7835092) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1647      +/-   ##
==========================================
- Coverage   63.61%   63.60%   -0.02%     
==========================================
  Files         223      223              
  Lines       28493    28493              
==========================================
- Hits        18127    18122       -5     
- Misses       9179     9183       +4     
- Partials     1187     1188       +1     

Files Changed	Coverage Δ
x/metadata/client/cli/tx.go	76.81% <100.00%> (-0.49%)	⬇️
x/metadata/types/specification.go	98.87% <100.00%> (ø)