vndk-def: Update eligible-list-28.csv

This commit changes:

* Add libminijail.so as VNDK
* Add following shared libs as vendor_available:
  * libstagefright_soft_c2h263enc
  * libstagefright_soft_c2mpeg4enc
  * libstagefright_soft_c2vp8enc
  * libstagefright_soft_c2vp9enc

Bug: 77781837
Test: Run vndk_definition_tool.py with latest dataset
Change-Id: Ic5d1bd3648f2d75114aa0095bcd4f7ee16eab92c