databases/mongodb44: Update to 4.4.9

[yasu]

Summary

• Update CONFLICTS_INSTALL
• Enable LSE atomics on 14-CURRENT aarch64

ChangeLog: https://docs.mongodb.com/manual/release-notes/4.4-changelog/#4.4.9-changelog
PR: 258687
Approved by: meta (mentor), ygy (mentor)

Test Plan

Build succeeds with poudriere and 13.0-RELEASE amd64 jail.

[yasu]

Add 'Differential Revision:' to commit message.

[meta]

LGTM.