feat: --generate-only and --offline flags can use keyname. (#9838)

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## Description

Closes: #9837 
ref: #9407

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---

### Author Checklist

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please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

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your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) 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)

client/context.go

@@ -11,7 +11,6 @@ import (
 	"gopkg.in/yaml.v2"
 
 	"github.com/gogo/protobuf/proto"
-	"github.com/pkg/errors"
 	rpcclient "github.com/tendermint/tendermint/rpc/client"
 
 	"github.com/cosmos/cosmos-sdk/codec"
@@ -324,15 +323,6 @@ func GetFromFields(kr keyring.Keyring, from string, genOnly bool) (sdk.AccAddres
 		return nil, "", 0, nil
 	}
 
-	if genOnly {
-		addr, err := sdk.AccAddressFromBech32(from)
-		if err != nil {
-			return nil, "", 0, errors.Wrap(err, "must provide a valid Bech32 address in generate-only mode")
-		}
-
-		return addr, "", 0, nil
-	}
-
 	var info keyring.Info
 	if addr, err := sdk.AccAddressFromBech32(from); err == nil {
 		info, err = kr.KeyByAddress(addr)