FiveFortySeven - Leave `civigrant` inactive during inconsistent period

FiveFortySeven - Leave `civigrant` inactive during inconsistent period

Before
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`migrateCiviGrant()` migrates some metadata from core-ownership to
core-extension-ownership...  and it ALSO activates the extension.  However,
the extension depends on other (possibly-inactive) extensions.  This
creates an inconsistent state (where active parts of `civigrant`
depend on inactive parts of `search_kit`).

In this inconsistent state, `ManagedEntities::reconcile()` fails.

After
-----

`migrateCiviGrant()` still migrates metadata.  However, it initially leaves
the extension inactive.  So `ManagedEntities::reconcile()` won't try to
setup these records.

After core schema is fully resolved, then it installs all necessary
extensions using normal mechanisms (with normal ordering).