Add scope to field validator.[redo PR: 3675] (#3805)

[cyw233]

What I did
This is for fix issue:sonic-net/sonic-buildimage#20379. It was done by sonic-net/sonic-utilities#3675. and it was reverted by sonic-net/sonic-utilities#3689.

This is redo by removing unnecessary change that caused PR test failure.

How I did it
For field_operation_validators, add scope if need read state_db.

How to verify it
admin@str2-7250-lc1-2:~$ sonic-db-cli STATE_DB -n asic0 hget "PORT_TABLE|Ethernet0" supported_fecs
none,rs

admin@str2-7250-lc1-2:~$ cat fec.json
[
{
"op": "add",
"path": "/asic0/PORT/Ethernet0/fec",
"value": "fc"
}
]

admin@str2-7250-lc1-2:~$ sudo config apply-patch fec.json
Patch Applier: asic0: Patch application starting.
Patch Applier: asic0: Patch: [{"op": "add", "path": "/PORT/Ethernet0/fec", "value": "fc"}]
Patch Applier: asic0 getting current config db.
Patch Applier: asic0: simulating the target full config after applying the patch.
Patch Applier: asic0: validating all JsonPatch operations are permitted on the specified fields
Failed to apply patch due to: Failed to apply patch on the following scopes:

• asic0: Modification of PORT table is illegal- validating function generic_config_updater.field_operation_validators.port_config_update_validator returned False
  Usage: config apply-patch [OPTIONS] PATCH_FILE_PATH
  Try "config apply-patch -h" for help.

Error: Failed to apply patch on the following scopes:

• asic0: Modification of PORT table is illegal- validating function generic_config_updater.field_operation_validators.port_config_update_validator returned False
  Previous command output (if the output of a command-line utility has changed)
  New command output (if the output of a command-line utility has changed)

[cyw233]

Original PR: sonic-net/sonic-utilities#3805

[cyw233]

@anamehra please review, thanks