Unify length of diacritical ascenders with Cyrillic descenders.

[jmcwilliams403]

Continuation of #2640 .

Note that below shows Ф under Bulgarian locale; The default unlocalized glyph is unchanged.

ФҐґꟀꟁ

Sans Thin Before:

Sans Thin After:

Sans Regular Before:

Sans Regular After:

Sans Heavy Before:

Sans Heavy After:

Slab Thin Before:

Slab Thin After:

Slab Regular Before:

Slab Regular After:

Slab Heavy Before:

Slab Heavy After: