No debug symbols in release android buidls (#30123)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/30123
In groovy string `'false'` is resolved as boolean `true`
thats why even as in `gradle.properties`:
```
nativeLibsDoNotStrip=false
```
branch `if (nativeLibsDoNotStrip)` always passed
Test Plan: Imported from OSS
Differential Revision: D18606907
Pulled By: IvanKobzarev
fbshipit-source-id: c10140e775624294c732e78ae3c41e05c7c9ad92
