feat: --generate-only and --offline flags can use keyname.

[atheeshp]

Description

Closes: #9837
ref: #9407

---

Author Checklist

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• included the necessary unit and integration tests
• added a changelog entry to CHANGELOG.md
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I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
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• reviewed state machine logic
• reviewed API design and naming
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[codecov]

Codecov Report

Merging #9838 (33de583) into master (f479b51) will increase coverage by 0.10%.
The diff coverage is 100.00%.

❗ Current head 33de583 differs from pull request most recent head 417dc0a. Consider uploading reports for the commit 417dc0a to get more accurate results

@@            Coverage Diff             @@
##           master    #9838      +/-   ##
==========================================
+ Coverage   63.45%   63.55%   +0.10%     
==========================================
  Files         568      568              
  Lines       53260    53372     +112     
==========================================
+ Hits        33795    33922     +127     
+ Misses      17543    17526      -17     
- Partials     1922     1924       +2     

Impacted Files	Coverage Δ
client/context.go	59.37% <ø> (+3.16%)	⬆️
x/auth/client/testutil/suite.go	96.63% <100.00%> (+0.31%)	⬆️
client/keys/import.go	57.14% <0.00%> (-1.95%)	⬇️
client/keys/add.go	67.42% <0.00%> (ø)
store/types/pruning.go	51.85% <0.00%> (ø)
crypto/keys/internal/ecdsa/privkey.go	84.21% <0.00%> (+1.75%)	⬆️
x/bank/types/balance.go	89.83% <0.00%> (+3.46%)	⬆️
client/keys/export.go	73.21% <0.00%> (+8.92%)	⬆️

[orijbot]

Visit https://dashboard.github.orijtech.com?pr=9838&remote=false&repo=cosmos%2Fcosmos-sdk to see benchmark details.

[anilcse]

Pre-approving, can you add a changelog entry

[likhita-809]

lgtm