[fuzzing] Rename ChromiumMojoProfile to MojoLockManagerProfile

ChromiumMojoProfile is too generic a name, since the profile
specifically targets the LockManager interface only.

Bug: 500007927
Change-Id: I4108e3ba567428387775d9d2e2ce89a0af32012c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7848686
Commit-Queue: Tigran Bantikyan <bantikyan@google.com>
Reviewed-by: Giovanni Ortuno Urquidi <ortuno@chromium.org>
Reviewed-by: Jocelyn Tran <jocelyntran@google.com>
Cr-Commit-Position: refs/heads/main@{#1632847}
NOKEYCHECK=True
GitOrigin-RevId: 21635190b4d86391786854705fe9b6b47511e29f