mds: add inline feature to MDS bootstrap incompat

mds: add inline feature to MDS bootstrap incompat

File systems that had inline data enabled at some point would have this
bit in the CompatSet "incompat" set. This would conflict during upgrade
with the default v16.2.4 CompatSet assigned to existing (16.2.4-) MDS.
Subsequently, this would cause an assertion in FSMap::sanity during
pending map creation.

This bit will get added anyway during the upgrade process so might as
well add it to the MDS CompatSet during bootstrap.

Fixes: https://tracker.ceph.com/issues/54081
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>