chore(gov): add proposer address to hooks

[vladjdk]

Adds the proposer address to governance submit proposal hooks.

Requires #25616 to be merged first.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 70.30%. Comparing base (7a7ee70) to head (3df0a31).

Files with missing lines	Patch %	Lines
x/gov/types/hooks.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@                     Coverage Diff                     @@
##           vlad/decouple-gov-distr   #25617      +/-   ##
===========================================================
- Coverage                    70.30%   70.30%   -0.01%     
===========================================================
  Files                          821      821              
  Lines                        53771    53771              
===========================================================
- Hits                         37805    37803       -2     
- Misses                       15966    15968       +2     

Files with missing lines	Coverage Δ
x/gov/keeper/proposal.go	83.09% <100.00%> (ø)
x/gov/types/expected_keepers.go	0.00% <ø> (ø)
x/gov/types/hooks.go	74.07% <50.00%> (ø)

... and 1 file with indirect coverage changes

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