feat: deprecate x/params usage in x/auth

[likhita-809]

Description

Closes: #12283

---

Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• followed the guidelines for building modules
• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[codecov]

Codecov Report

Merging #12475 (ffc69eb) into main (dc1677b) will decrease coverage by 0.04%.
The diff coverage is 58.33%.

@@            Coverage Diff             @@
##             main   #12475      +/-   ##
==========================================
- Coverage   65.33%   65.29%   -0.05%     
==========================================
  Files         687      691       +4     
  Lines       71709    71768      +59     
==========================================
+ Hits        46852    46860       +8     
- Misses      22226    22274      +48     
- Partials     2631     2634       +3     

Impacted Files	Coverage Δ
x/auth/keeper/genesis.go	39.13% <0.00%> (-8.70%)	⬇️
x/auth/types/keys.go	100.00% <ø> (ø)
x/auth/types/msgs.go	0.00% <0.00%> (ø)
x/auth/types/params.go	75.90% <ø> (-2.60%)	⬇️
x/auth/types/params_legacy.go	0.00% <0.00%> (ø)
x/auth/keeper/migrations.go	6.45% <33.33%> (-0.45%)	⬇️
x/auth/module.go	46.42% <50.00%> (-1.14%)	⬇️
x/auth/keeper/account.go	53.33% <57.14%> (ø)
x/auth/migrations/v2/migrate.go	72.72% <72.72%> (ø)
x/auth/keeper/params.go	82.35% <81.25%> (-17.65%)	⬇️
... and 9 more