fix: In getLedgerDevice() error, mention CGO_ENABLED=1

[jefft0]

Resolves #2737

As required by the HID library, the executable must be built with CGO_ENABLED=1 in order to find the Ledger. We want to keep building without this flag by default so that the binary is deterministic. The HID library already has the Supported function which returns false if not built with cgo.

• In the getLedgerDevice, if not Supported then return an error message to try building with CGO_ENABLED=1

The error message looks like:

unable to create Ledger reference in keybase, ledger support is not enabled, try building with CGO_ENABLED=1

This PR is a minimal solution as an alternative to putting CGO_ENABLED=1 in the gnokey Makefile.

[Gno2D2]

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Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
tm2/pkg/crypto/ledger/ledger_secp256k1.go	0.00%	1 Missing and 1 partial ⚠️

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