fix: feegrant grant cli bug (cosmos#9720)

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## Description
feegrant grant cli granter now accepts key name as well as address in general and accepts only address in `--generate-only` mode

Closes: cosmos#9659 

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---

### 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...

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

CHANGELOG.md

@@ -77,6 +77,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Bug Fixes
 
+* [\#9720](https://github.com/cosmos/cosmos-sdk/pull/9720) Feegrant grant cli granter now accepts key name as well as address in general and accepts only address in --generate-only mode
 * [\#9651](https://github.com/cosmos/cosmos-sdk/pull/9651) Change inconsistent limit of `0` to `MaxUint64` on InfiniteGasMeter and add GasRemaining func to GasMeter.
 * [\#9639](https://github.com/cosmos/cosmos-sdk/pull/9639) Check store keys length before accessing them by making sure that `key` is of length `m+1` (for `key[n:m]`)
 * (types) [\#9627](https://github.com/cosmos/cosmos-sdk/pull/9627) Fix nil pointer panic on `NewBigIntFromInt`

x/feegrant/client/cli/tx.go

@@ -46,7 +46,7 @@ func GetTxCmd() *cobra.Command {
 // NewCmdFeeGrant returns a CLI command handler for creating a MsgGrantAllowance transaction.
 func NewCmdFeeGrant() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "grant [granter] [grantee]",
+		Use:   "grant [granter_key_or_address] [grantee]",
 		Short: "Grant Fee allowance to an address",
 		Long: strings.TrimSpace(
 			fmt.Sprintf(
@@ -63,10 +63,6 @@ Examples:
 		),
 		Args: cobra.ExactArgs(2),
 		RunE: func(cmd *cobra.Command, args []string) error {
-			_, err := sdk.AccAddressFromBech32(args[0])
-			if err != nil {
-				return err
-			}
 
 			cmd.Flags().Set(flags.FlagFrom, args[0])
 			clientCtx, err := client.GetClientTxContext(cmd)

x/feegrant/client/testutil/suite.go

@@ -10,6 +10,7 @@ import (
 	"github.com/stretchr/testify/suite"
 	tmcli "github.com/tendermint/tendermint/libs/cli"
 
+	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/flags"
 	"github.com/cosmos/cosmos-sdk/crypto/hd"
 	"github.com/cosmos/cosmos-sdk/crypto/keyring"
@@ -258,6 +259,10 @@ func (s *IntegrationTestSuite) TestNewCmdFeeGrant() {
 	alreadyExistedGrantee := s.addedGrantee
 	clientCtx := val.ClientCtx
 
+	fromAddr, fromName, _, err := client.GetFromFields(clientCtx.Keyring, granter.String(), clientCtx.GenerateOnly)
+	s.Require().Equal(fromAddr, granter)
+	s.Require().NoError(err)
+
 	commonFlags := []string{
 		fmt.Sprintf("--%s=%s", flags.FlagBroadcastMode, flags.BroadcastBlock),
 		fmt.Sprintf("--%s=true", flags.FlagSkipConfirmation),
@@ -297,6 +302,19 @@ func (s *IntegrationTestSuite) TestNewCmdFeeGrant() {
 			),
 			true, 0, nil,
 		},
+		{
+			"wrong granter key name",
+			append(
+				[]string{
+					"invalid_granter",
+					"cosmos16dun6ehcc86e03wreqqww89ey569wuj4em572w",
+					fmt.Sprintf("--%s=%s", cli.FlagSpendLimit, "100stake"),
+					fmt.Sprintf("--%s=%s", flags.FlagFrom, granter),
+				},
+				commonFlags...,
+			),
+			true, 0, nil,
+		},
 		{
 			"valid basic fee grant",
 			append(
@@ -310,6 +328,19 @@ func (s *IntegrationTestSuite) TestNewCmdFeeGrant() {
 			),
 			false, 0, &sdk.TxResponse{},
 		},
+		{
+			"valid basic fee grant with granter key name",
+			append(
+				[]string{
+					fromName,
+					"cosmos16dun6ehcc86e03wreqqww89ey569wuj4em572w",
+					fmt.Sprintf("--%s=%s", cli.FlagSpendLimit, "100stake"),
+					fmt.Sprintf("--%s=%s", flags.FlagFrom, fromName),
+				},
+				commonFlags...,
+			),
+			false, 0, &sdk.TxResponse{},
+		},
 		{
 			"valid basic fee grant with amino",
 			append(