refactor: uppercase initialisms in test key generators
Description
Renames the test key-generation helpers in
internal/commands/auth/generate/testdata/generate_test_keys.go to use
uppercased initialisms, per Go naming conventions:
generateRsaKey→generateRSAKeygenerateEd25519Key→generateED25519KeygenerateEcdsaKey→generateECDSAKeygenerateEcdsaKeyManual→generateECDSAKeyManual
This addresses the style follow-up discussions from !3433 (merged).
Related Issues
Closes #8373 (closed)
How has this been tested?
go build and go vet on the package both pass. The change is a pure
rename within a single package main test helper; no behavior changes.