[nice to have] multisig preventing signing with wrong key

[BrandonWeng]

Describe your changes and provide context

Doesn't seem to be absolutely necessary since it would just fail when broadcasting, more of an UI improvement. We can wait until 3.0.4 is out and then merging

Copying from: cosmos/cosmos-sdk#12548

Testing performed to validate your change

unit tests

[codecov]

Codecov Report

Merging #286 (ede9ef4) into main (df2cf22) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

❗ Current head ede9ef4 differs from pull request most recent head f716336. Consider uploading reports for the commit f716336 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #286      +/-   ##
==========================================
- Coverage   54.98%   54.95%   -0.03%     
==========================================
  Files         619      619              
  Lines       51524    51549      +25     
==========================================
  Hits        28329    28329              
- Misses      21162    21187      +25     
  Partials     2033     2033              

Impacted Files	Coverage Δ
x/auth/client/cli/tx_sign.go	0.00% <0.00%> (ø)

[BrandonWeng]

Just tested this on a local node too