Merge #88573

88573: storage: use metamorphic reader and writer in `TestMVCCHistories` r=tbg a=erikgrinaker

Touches #86655.

**storage: use metamorhic reader in `TestMVCCHistories`**

This adds a metamorphic parameter for `TestMVCCHistories` that uses a
random reader kind (`Engine`, `Batch`, `Snapshot`, or `ReadOnly`) for
all read commands.

Release note: None
  
**storage: metamorphically use batch for writes in `TestMVCCHistories`**

This patch adds a metamorphic parameter for `TestMVCCHistories` which
will randomly use a batch instead of the engine for write commands.

Release note: None

Co-authored-by: Erik Grinaker <grinaker@cockroachlabs.com>