Updated gas

[grarco]

Describe your changes

Updates genesis local files with the most update values for mainnet. Updates the DEFAULT_GAS_LIMIT in the sdk. Corrects tests.

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.99%. Comparing base (2107072) to head (762d6a4).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3956      +/-   ##
==========================================
- Coverage   74.00%   73.99%   -0.02%     
==========================================
  Files         341      341              
  Lines      106615   106614       -1     
==========================================
- Hits        78901    78888      -13     
- Misses      27714    27726      +12     

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[brentstone]

So to summarize:

• hard-coded DEFAULT_GAS_LIMIT = 50_000 from 250_000
• max_block_gas: 15_000_000 --> 3_000_000
• masp_fee_payment: 250_000 --> 50_000
• gas_scale: 10_000 --> 50_000
• Cost per gas unit in NAM = 10^-5 as before (but changed in our testing config)

So now, the cost for a simple tx by default is 0.5 NAM.

@grarco Can you explain again why MASP fee payment and gas scale are changed?

[grarco]

Masp fee payment must be kept to a sensible value so that we are guaranteed that fee payment via the MASP happens in a reasonable amount of time. Gas scale was increased to reduce the gas used by transactions so that the fees could go down as well.

[brentstone]

@grarco is this rdy for merge?

[grarco]

@grarco is this rdy for merge?

Yes it is